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Interactions between HHR and Pramlintide

4 drug interactions and 39 additional warnings found for the following 2 drugs:

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Drug interactions

Moderate drug interactions

Moderate:

hydrALAZINE hydroCHLOROthiazide

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine) and HHR (hydralazine / hydrochlorothiazide / reserpine)
Monitor

Concomitant treatment with other antihypertensive agents, vasodilators, or agents with hypotensive properties, including alpha-adrenoreceptor antagonists, angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), beta-adrenergic blockers, calcium channel blockers, diuretics and nitrates, may potentiate the hypotensive effects of hydralazine and dihydralazine.

Management

Blood pressure and heart rate should be closely monitored when hydralazine or dihydralazine is used with other agents that can induce hypotension.

References (2)
  1. (2022) "Product Information. Apresoline (hydralazine)." Sterimax Inc
  2. (2022) "Product Information. Hydralazine (hydralazine)." Advanz Pharma
Moderate:

hydrALAZINE reserpine

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine) and HHR (hydralazine / hydrochlorothiazide / reserpine)
Monitor

Concomitant treatment with other antihypertensive agents, vasodilators, or agents with hypotensive properties, including alpha-adrenoreceptor antagonists, angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), beta-adrenergic blockers, calcium channel blockers, diuretics and nitrates, may potentiate the hypotensive effects of hydralazine and dihydralazine.

Management

Blood pressure and heart rate should be closely monitored when hydralazine or dihydralazine is used with other agents that can induce hypotension.

References (2)
  1. (2022) "Product Information. Apresoline (hydralazine)." Sterimax Inc
  2. (2022) "Product Information. Hydralazine (hydralazine)." Advanz Pharma
Moderate:

hydroCHLOROthiazide reserpine

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine) and HHR (hydralazine / hydrochlorothiazide / reserpine)
Monitor

The hypotensive effects of thiazide diuretics and alpha-adrenergic blockers may be additive. Postural hypotension may occur.

Management

Hemodynamic responses should be monitored during coadministration, especially during the first few weeks of therapy. Patients should be advised to take the alpha-blocker at bedtime and to notify their physician if they experience dizziness or syncope while awake.

References (5)
  1. Achari R, Laddu A (1992) "Terazosin: a new alpha adrenoceptor blocking drug." J Clin Pharmacol, 32, p. 520-3
  2. Kuokkanen K, Mattila MJ (1975) "Demonstration of an additive antihypertensive effect of prazosin and polythiazide in out-patient." Curr Ther Res Clin Exp, 17, p. 431-6
  3. Pool JL (1991) "Combination antihypertensive therapy with terazosin and other antihypertensive agents: results of clinical trials." Am Heart J, 122, p. 926-31
  4. Cohen J (1991) "Long-term efficacy and safety of terazosin alone and in combination with other antihypertensive agents." Am Heart J, 122, p. 919-25
  5. (2002) "Product Information. Xatral (alfuzosin)." Sanofi-Synthelabo Canada Inc
Moderate:

hydroCHLOROthiazide pramlintide

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine) and pramlintide
Monitor

The efficacy of insulin and other antidiabetic agents may be diminished by certain drugs, including atypical antipsychotics, corticosteroids, diuretics, estrogens, gonadotropin-releasing hormone agonists, human growth hormone, phenothiazines, progestins, protease inhibitors, sympathomimetic amines, thyroid hormones, L-asparaginase, alpelisib, copanlisib, danazol, diazoxide, isoniazid, megestrol, omacetaxine, phenytoin, sirolimus, tagraxofusp, temsirolimus, as well as pharmacologic dosages of nicotinic acid and adrenocorticotropic agents. These drugs may interfere with blood glucose control because they can cause hyperglycemia, glucose intolerance, new-onset diabetes mellitus, and/or exacerbation of preexisting diabetes.

Management

Caution is advised when drugs that can interfere with glucose metabolism are prescribed to patients with diabetes. Close clinical monitoring of glycemic control is recommended following initiation or discontinuation of these drugs, and the dosages of concomitant antidiabetic agents adjusted as necessary. Patients should be advised to notify their physician if their blood glucose is consistently high or if they experience symptoms of severe hyperglycemia such as excessive thirst and increases in the volume or frequency of urination. Likewise, patients should be observed for hypoglycemia when these drugs are withdrawn from their therapeutic regimen.

References (87)
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  25. (2001) "Product Information. Carafate (sucralfate)." Hoechst Marion Roussel
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  31. Berlin I (1993) "Prazosin, diuretics, and glucose intolerance." Ann Intern Med, 119, p. 860
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  33. Haiba NA, el-Habashy MA, Said SA, Darwish EA, Abdel-Sayed WS, Nayel SE (1989) "Clinical evaluation of two monthly injectable contraceptives and their effects on some metabolic parameters." Contraception, 39, p. 619-32
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  36. Goldman JA, Ovadia JL (1969) "The effect of estrogen on intravenous glucose tolerance in woman." Am J Obstet Gynecol, 103, p. 172-8
  37. Hannaford PC, Kay CR (1989) "Oral contraceptives and diabetes mellitus." BMJ, 299, p. 1315-6
  38. Spellacy WN, Ellingson AB, Tsibris JC (1989) "The effects of two triphasic oral contraceptives on carbohydrate metabolism in women during 1 year of use." Fertil Steril, 51, p. 71-4
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  40. Domenet JG (1968) "Diabetogenic effect of oral diuretics." Br Med J, 3, p. 188
  41. Coni NK, Gordon PW, Mukherjee AP, Read PR (1974) "The effect of frusemide and ethacrynic acid on carbohydrate metabolism." Age Ageing, 3, p. 85-90
  42. Schmitz O, Hermansen K, Nielsen OH, Christensen CK, Arnfred J, Hansen HE, Mogensen CE, Orskov H, Beck-Nielsen H (1986) "Insulin action in insulin-dependent diabetics after short-term thiazide therapy." Diabetes Care, 9, p. 631-6
  43. Blayac JP, Ribes G, Buys D, Puech R, Loubatieres-Mariani MM (1981) "Effects of a new benzothiadiazine derivative, LN 5330, on insulin secretion." Arch Int Pharmacodyn Ther, 253, p. 154-63
  44. Elmfeldt D, Berglund G, Wedel H, Wilhelmsen L (1983) "Incidence and importance of metabolic side-effects during antihypertensive therapy." Acta Med Scand Suppl, 672, p. 79-83
  45. Winchester JF, Kellett RJ, Boddy K, Boyle P, Dargie HJ, Mahaffey ME, Ward DM, Kennedy AC (1980) "Metolazone and bendroflumethiazide in hypertension: physiologic and metabolic observations." Clin Pharmacol Ther, 28, p. 611-8
  46. Petri M, Cumber P, Grimes L, Treby D, Bryant R, Rawlins D, Ising H (1986) "The metabolic effects of thiazide therapy in the elderly: a population study." Age Ageing, 15, p. 151-5
  47. (2001) "Product Information. Glucophage (metformin)." Bristol-Myers Squibb
  48. Harper R, Ennis CN, Heaney AP, Sheridan B, Gormley M, Atkinson AB, Johnston GD, Bell PM (1995) "A comparison of the effects of low- and conventional-dose thiazide diuretic on insulin action in hypertensive patients with NIDDM." Diabetologia, 38, p. 853-9
  49. (2001) "Product Information. Precose (acarbose)." Bayer
  50. (2001) "Product Information. Norvir (ritonavir)." Abbott Pharmaceutical
  51. (2001) "Product Information. Amaryl (glimepiride)." Hoechst Marion Roussel
  52. Charan VD, Desai N, Singh AP, Choudhry VP (1993) "Diabetes mellitus and pancreatitis as a complication of L- asparaginase therapy." Indian Pediatr, 30, p. 809-10
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  54. (2001) "Product Information. Crixivan (indinavir)." Merck & Co., Inc
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  56. (2001) "Product Information. Viracept (nelfinavir)." Agouron Pharma Inc
  57. Dube MP, Johnson DL, Currier JS, Leedom JM (1997) "Protease inhibitor-associated hyperglycaemia." Lancet, 350, p. 713-4
  58. (2001) "Product Information. Oncaspar (pegaspargase)." Rhone Poulenc Rorer
  59. (2001) "Product Information. Prandin (repaglinide)." Novo Nordisk Pharmaceuticals Inc
  60. (2001) "Product Information. Elspar (asparaginase)." Merck & Co., Inc
  61. (2022) "Product Information. Hyperstat (diazoxide)." Apothecon Inc
  62. (2001) "Product Information. Megace (megestrol)." Bristol-Myers Squibb
  63. Walli R, Demant T (1998) "Impaired glucose tolerance and protease inhibitors." Ann Intern Med, 129, p. 837-8
  64. (2001) "Product Information. Agenerase (amprenavir)." Glaxo Wellcome
  65. Mauss S, Wolf E, Jaeger H (1999) "Impaired glucose tolerance in HIV-positive patients receiving and those not receiving protease inhibitors." Ann Intern Med, 130, p. 162-3
  66. Kaufman MB, Simionatto C (1999) "A review of protease inhibitor-induced hyperglycemia." Pharmacotherapy, 19, p. 114-7
  67. (2001) "Product Information. Tolinase (tolazamide)." Pharmacia and Upjohn
  68. (2001) "Product Information. Orinase (tolbutamide)." Pharmacia and Upjohn
  69. (2001) "Product Information. Dymelor (acetohexamide)." Lilly, Eli and Company
  70. Wehring H, Alexander B, Perry PJ (2000) "Diabetes mellitus associated with clozapine therapy." Pharmacotherapy, 20, p. 844-7
  71. Tsiodras S, Mantzoros C, Hammer S, Samore M (2000) "Effects of protease inhibitors on hyperglycemia, hyperlipidemia, and lipodystrophy - A 5-year cohort study." Arch Intern Med, 160, p. 2050-6
  72. (2001) "Product Information. Fortovase (saquinavir)." Roche Laboratories
  73. (2001) "Product Information. Starlix (nateglinide)." Novartis Pharmaceuticals
  74. Hardy H, Esch LD, Morse GD (2001) "Glucose disorders associated with HIV and its drug therapy." Ann Pharmacother, 35, p. 343-51
  75. Leary WP, Reyes AJ (1984) "Drug interactions with diuretics." S Afr Med J, 65, p. 455-61
  76. (2022) "Product Information. NovoLOG Mix 70/30 (insulin aspart-insulin aspart protamine)." Novo Nordisk Pharmaceuticals Inc
  77. (2003) "Product Information. Reyataz (atazanavir)." Bristol-Myers Squibb
  78. (2003) "Product Information. Lexiva (fosamprenavir)." GlaxoSmithKline
  79. (2004) "Product Information. Apidra (insulin glulisine)." Aventis Pharmaceuticals
  80. (2006) "Product Information. Prezista (darunavir)." Ortho Biotech Inc
  81. (2006) "Product Information. Zolinza (vorinostat)." Merck & Co., Inc
  82. (2007) "Product Information. Torisel (temsirolimus)." Wyeth-Ayerst Laboratories
  83. (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka America Pharmaceutical, Inc.
  84. (2019) "Product Information. Elzonris (tagraxofusp)." Stemline Therapeutics
  85. (2019) "Product Information. Piqray (alpelisib)." Novartis Pharmaceuticals
  86. Drazilova S, Gazda J, Janicko M, Jarcuska P (2018) "Chronic Hepatitis C Association with Diabetes Mellitus and Cardiovascular Risk in the Era of DAA Therapy" Can J Gastroenterol Hepatol, 1, p. 1-11
  87. (2026) "Product Information. Awiqli FlexTouch (insulin icodec)." Novo Nordisk Pharmaceuticals Inc

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

pramlintide Food/Lifestyle

Applies to: pramlintide
Adjust dosing interval

Pramlintide slows gastric emptying and may delay the absorption of concomitantly administered oral medications. In a pharmacokinetic study of 24 patients with type 2 diabetes, coadministration with pramlintide (120 mcg) decreased the peak plasma concentration (Cmax) of acetaminophen (1000 mg) by 29% and increased its time to peak plasma concentration (Tmax) based on the time of acetaminophen administration relative to pramlintide injection. Pramlintide significantly increased acetaminophen Tmax (range 48 to 72 minutes) when acetaminophen was administered simultaneously with or up to 2 hours following pramlintide injection, but it had negligible effect when acetaminophen was administered 1 to 2 hours before pramlintide injection.

Management

When rapid onset of a concomitantly administered oral medication is critical to its effectiveness, the medication should be administered at least 1 hour before or 2 hours after pramlintide injection.

References (1)
  1. (2005) "Product Information. Symlin (pramlintide)." Amphastar Pharmaceuticals Inc
Moderate:

hydrALAZINE Alcohol (Ethanol)

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine)
Monitor

Certain psychotherapeutic and other CNS-active agents may have blood pressure-lowering effects and may cause dizziness, orthostatic hypotension, or syncope. These effects may be more likely during treatment initiation, dose escalation, or treatment restart. Coadministration with antihypertensives or other agents with blood pressure-lowering properties, particularly vasodilators and alpha-adrenergic blockers, may result in additive hypotensive or orthostatic effects.

Management

Monitor blood pressure and clinical response during concomitant use, especially when starting or increasing the dose of either agent. Patients should be advised to rise slowly from a sitting or lying position and to report dizziness, lightheadedness, fainting, orthostasis, palpitations, or troublesome changes in pulse or heart rate. Patients should be cautioned that alcohol may enhance blood pressure-lowering effects during concomitant use with antihypertensives or other agents with hypotensive properties. Patients should avoid driving or operating hazardous machinery until they know how the medications affect them.

References (13)
  1. Sternbach H (1991) "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol, 11, p. 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA (1984) "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med, 101, p. 498-9
  3. Feder R (1991) "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry, 52, p. 139
  4. Ellison JM, Milofsky JE, Ely E (1990) "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry, 51, p. 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. (2001) "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit, 23, p. 435-40
  6. Pacher P, Kecskemeti V (2004) "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des, 10, p. 2463-75
  7. Andrews C, Pinner G (1998) "Postural hypotension induced by paroxetine." BMJ, 316, p. 595
  8. (2023) "Product Information. Buprenorphine (buprenorphine)." G.L. Pharma UK Ltd
  9. (2023) "Product Information. Temgesic (buprenorphine)." Reckitt Benckiser Pty Ltd
  10. (2026) "Product Information. Urapidil (Carinopharm) (urapidil)." Imported (EU)
  11. (2020) "Product Information. URAPIDIL ACCORD (urapidil)." ACCORD HEALTHCARE LIMITED
  12. (2020) "Product Information. Ebrantil (urapidil)." CHEPLAPHARM ARZNEIMITTEL GMBH
  13. (2026) "Product Information. Urapidil (urapidil)." Imported (Switzerland)
Moderate:

hydroCHLOROthiazide Alcohol (Ethanol)

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine)
Monitor

Certain psychotherapeutic and other CNS-active agents may have blood pressure-lowering effects and may cause dizziness, orthostatic hypotension, or syncope. These effects may be more likely during treatment initiation, dose escalation, or treatment restart. Coadministration with antihypertensives or other agents with blood pressure-lowering properties, particularly vasodilators and alpha-adrenergic blockers, may result in additive hypotensive or orthostatic effects.

Management

Monitor blood pressure and clinical response during concomitant use, especially when starting or increasing the dose of either agent. Patients should be advised to rise slowly from a sitting or lying position and to report dizziness, lightheadedness, fainting, orthostasis, palpitations, or troublesome changes in pulse or heart rate. Patients should be cautioned that alcohol may enhance blood pressure-lowering effects during concomitant use with antihypertensives or other agents with hypotensive properties. Patients should avoid driving or operating hazardous machinery until they know how the medications affect them.

References (13)
  1. Sternbach H (1991) "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol, 11, p. 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA (1984) "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med, 101, p. 498-9
  3. Feder R (1991) "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry, 52, p. 139
  4. Ellison JM, Milofsky JE, Ely E (1990) "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry, 51, p. 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. (2001) "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit, 23, p. 435-40
  6. Pacher P, Kecskemeti V (2004) "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des, 10, p. 2463-75
  7. Andrews C, Pinner G (1998) "Postural hypotension induced by paroxetine." BMJ, 316, p. 595
  8. (2023) "Product Information. Buprenorphine (buprenorphine)." G.L. Pharma UK Ltd
  9. (2023) "Product Information. Temgesic (buprenorphine)." Reckitt Benckiser Pty Ltd
  10. (2026) "Product Information. Urapidil (Carinopharm) (urapidil)." Imported (EU)
  11. (2020) "Product Information. URAPIDIL ACCORD (urapidil)." ACCORD HEALTHCARE LIMITED
  12. (2020) "Product Information. Ebrantil (urapidil)." CHEPLAPHARM ARZNEIMITTEL GMBH
  13. (2026) "Product Information. Urapidil (urapidil)." Imported (Switzerland)
Moderate:

reserpine Alcohol (Ethanol)

Applies to: HHR (hydralazine / hydrochlorothiazide / reserpine)
Monitor

Certain psychotherapeutic and other CNS-active agents may have blood pressure-lowering effects and may cause dizziness, orthostatic hypotension, or syncope. These effects may be more likely during treatment initiation, dose escalation, or treatment restart. Coadministration with antihypertensives or other agents with blood pressure-lowering properties, particularly vasodilators and alpha-adrenergic blockers, may result in additive hypotensive or orthostatic effects.

Management

Monitor blood pressure and clinical response during concomitant use, especially when starting or increasing the dose of either agent. Patients should be advised to rise slowly from a sitting or lying position and to report dizziness, lightheadedness, fainting, orthostasis, palpitations, or troublesome changes in pulse or heart rate. Patients should be cautioned that alcohol may enhance blood pressure-lowering effects during concomitant use with antihypertensives or other agents with hypotensive properties. Patients should avoid driving or operating hazardous machinery until they know how the medications affect them.

References (13)
  1. Sternbach H (1991) "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol, 11, p. 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA (1984) "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med, 101, p. 498-9
  3. Feder R (1991) "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry, 52, p. 139
  4. Ellison JM, Milofsky JE, Ely E (1990) "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry, 51, p. 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. (2001) "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit, 23, p. 435-40
  6. Pacher P, Kecskemeti V (2004) "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des, 10, p. 2463-75
  7. Andrews C, Pinner G (1998) "Postural hypotension induced by paroxetine." BMJ, 316, p. 595
  8. (2023) "Product Information. Buprenorphine (buprenorphine)." G.L. Pharma UK Ltd
  9. (2023) "Product Information. Temgesic (buprenorphine)." Reckitt Benckiser Pty Ltd
  10. (2026) "Product Information. Urapidil (Carinopharm) (urapidil)." Imported (EU)
  11. (2020) "Product Information. URAPIDIL ACCORD (urapidil)." ACCORD HEALTHCARE LIMITED
  12. (2020) "Product Information. Ebrantil (urapidil)." CHEPLAPHARM ARZNEIMITTEL GMBH
  13. (2026) "Product Information. Urapidil (urapidil)." Imported (Switzerland)

Disease interactions

35 potential interactions Applies to: 32 conditions, including High Cholesterol, Depression, Asthma, Gout, and Diarrhea.

Abnormal Glucose Tolerance

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with Abnormal Glucose Tolerance.

Thiazide diuretics may cause hyperglycemia and glycosuria in patients with diabetes. They may also precipitate diabetes in prediabetic patients. These effects are usually reversible following discontinuation of the drugs. Therapy with thiazide diuretics should be administered cautiously in patients with diabetes mellitus, glucose intolerance, or a predisposition to hyperglycemia. Patients with diabetes mellitus should be monitored more closely during thiazide therapy, and their antidiabetic regimen adjusted accordingly.

Anuria

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Anuria.

The use of thiazide diuretics is contraindicated in patients with anuria.

Asthma

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with Asthma.

Thiazide diuretics should be used with caution in patients with history of bronchial asthma as sensitivity reactions may occur.

Bone Marrow Depression/Low Blood Counts

Major:

HHR

The hydrALAZINE in HHR has a major potential interaction with Bone Marrow Depression/Low Blood Counts.

Hydralazine may rarely cause blood dyscrasias at recommended dosages. Reduction in hemoglobin, red cell count, agranulocytosis, leukopenia, and purpura have been reported. Therapy with hydralazine should be administered cautiously in patients with these preexisting conditions and if such abnormalities develop during the course of therapy, treatment should be discontinued. Monitoring blood counts should be considered for those patients at higher risk.

Cerebral Vascular Disorder

Moderate:

HHR

The hydrALAZINE in HHR has a moderate potential interaction with Cerebral Vascular Disorder.

The vasodilatory effects of hydralazine may aggravate cerebral vasculopathy. Therapy with hydralazine should be administered cautiously in patients with cerebral vasculopathy.

Dehydration

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Dehydration.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Depression

Major:

HHR

The reserpine in HHR has a major potential interaction with Depression.

The use of rauwolfia alkaloids is contraindicated in patients with a history of mental depression, especially suicidal tendencies. Rauwolfia alkaloids depletes catecholamine and serotonin stores.

Diabetes Mellitus

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with Diabetes Mellitus.

Thiazide diuretics may cause hyperglycemia and glycosuria in patients with diabetes. They may also precipitate diabetes in prediabetic patients. These effects are usually reversible following discontinuation of the drugs. Therapy with thiazide diuretics should be administered cautiously in patients with diabetes mellitus, glucose intolerance, or a predisposition to hyperglycemia. Patients with diabetes mellitus should be monitored more closely during thiazide therapy, and their antidiabetic regimen adjusted accordingly.

Diarrhea

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Diarrhea.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Electrolyte Abnormalities

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Electrolyte Abnormalities.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Fluid Retention

Moderate:

HHR

The reserpine in HHR has a moderate potential interaction with Fluid Retention.

Peripheral- acting antiadrenergic agents can cause peripheral edema. Therapy with peripheral- acting antiadrenergic agents should be administered cautiously in patients adversely affected by sodium and water retention.

Gallstones

Moderate:

HHR

The reserpine in HHR has a moderate potential interaction with Gallstones.

Rauwolfia alkaloids increase gastrointestinal motility and secretion and can precipitate biliary colic in patients with gallstones. Therapy with rauwolfia alkaloids should be administered cautiously in patients with a history of gallstones.

Gastroparesis

Major:

pramlintide

Pramlintide has a major potential interaction with Gastroparesis.

The use of pramlintide is contraindicated in patients with a confirmed diagnosis of gastroparesis as it slows gastric emptying.

Glomerulonephritis

Moderate:

HHR

The hydrALAZINE in HHR has a moderate potential interaction with Glomerulonephritis.

The use of hydralazine has been associated with the development of glomerulonephritis. Hydralazine should be used with caution in patients with advanced renal damage and these patients may require a lower dose. Renal function should be monitored and supported as required.

Gout

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with Gout.

Thiazide diuretics decrease the rate of uric acid excretion. Hyperuricemia occurs frequently but is usually asymptomatic and rarely leads to clinical gout except in patients with a history of gout or chronic renal failure. Therapy with thiazide diuretics should be administered cautiously in such patients.

High Cholesterol

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with High Cholesterol.

Thiazide diuretics may increase serum triglyceride and cholesterol levels, primarily LDL and VLDL. Whether these effects are dose-related and sustained during chronic therapy are unknown. Patients with preexisting hyperlipidemia may require closer monitoring during thiazide therapy, and adjustments made accordingly in their lipid-lowering regimen

Hyperaldosteronism

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Hyperaldosteronism.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Hyperparathyroidism

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with Hyperparathyroidism.

Urinary calcium excretion is decreased by thiazide diuretics during chronic administration. Pathologic changes in the parathyroid gland with hypercalcemia and hypophosphatemia have been reported during prolonged therapy. However, the common complications of hyperparathyroidism such as renal lithiasis, bone resorption, and peptic ulceration have not been seen. Clinicians should be cognizant of these effects when prescribing or administering thiazide therapy to patients with hyperparathyroidism. These drugs should be discontinued before carrying out tests for parathyroid function.

Hypokalemia

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Hypokalemia.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Hyponatremia

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Hyponatremia.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Inflammatory Bowel Disease

Major:

HHR

The reserpine in HHR has a major potential interaction with Inflammatory Bowel Disease.

The use of rauwolfia alkaloids is contraindicated in patients with active peptic ulcer or ulcerative colitis. Since rauwolfia alkaloids increase gastrointestinal motility and secretion, these conditions may be aggravated. Therapy with rauwolfia alkaloids should be administered cautiously in patients with a history of peptic ulcer or ulcerative colitis because of the risk of reactivation.

Ischemic Heart Disease

Major:

HHR

The hydrALAZINE in HHR has a major potential interaction with Ischemic Heart Disease.

The use of hydralazine is contraindicated in patients with coronary artery disease. Reflex tachycardia may commonly occur. Palpitations and chest pain have also been reported. Myocardial infarction has been associated with the use of hydralazine.

Liver Disease

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Liver Disease.

Patients with severe liver disease or cirrhosis are very susceptible to thiazide-induced hypokalemic hypochloremic alkalosis. Blood ammonia concentrations may be further increased in patients with previously elevated concentrations. Hepatic encephalopathy and death have occurred secondary to the electrolyte alterations accompanying diuretic use. Therapy with thiazide diuretics should be administered cautiously in patients with impaired hepatic function or progressive liver disease, and discontinued promptly if signs of impending hepatic coma appear (e.g., tremors, confusion, and increased jaundice).

Lupus Erythematosus

Major:

HHR

The hydrALAZINE in HHR has a major potential interaction with Lupus Erythematosus.

The use of hydralazine has been associated with the development of lupus erythematosus and lupus-like syndromes, as well as exacerbation of the disease. Hydralazine therapy should be withdrawn in patients experiencing worsening of preexisting lupus. Monitoring complete blood counts, and antinuclear antibody titers before and during prolonged therapy is recommended.

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Lupus Erythematosus.

The use of thiazide diuretics has been reported to possibly exacerbate or activate systemic lupus erythematosus. Reported cases have generally been associated with chlorothiazide and hydrochlorothiazide. Therapy with thiazide diuretics should be administered cautiously in patients with a history or risk of SLE.

Magnesium Imbalance

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Magnesium Imbalance.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Malnourishment

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Malnourishment.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Peptic Ulcer

Major:

HHR

The reserpine in HHR has a major potential interaction with Peptic Ulcer.

The use of rauwolfia alkaloids is contraindicated in patients with active peptic ulcer or ulcerative colitis. Since rauwolfia alkaloids increase gastrointestinal motility and secretion, these conditions may be aggravated. Therapy with rauwolfia alkaloids should be administered cautiously in patients with a history of peptic ulcer or ulcerative colitis because of the risk of reactivation.

Renal Dysfunction

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Renal Dysfunction.

Thiazide diuretics may be ineffective when the glomerular filtration rate is low (GFR < 25 mL/min) because they are not expected to be filtered into the renal tubule, their site of action. In addition, thiazide diuretics decrease the GFR and may precipitate azotemia in renal disease. Cumulative effects may also develop because most of these drugs are excreted unchanged in the urine by glomerular filtration and active tubular secretion. Therapy with thiazide diuretics should be administered cautiously at reduced dosages in patients with renal impairment. If renal function becomes progressively worse, as indicated by rising BUN or serum creatinine levels, an interruption or discontinuation of thiazide therapy should be considered.

Moderate:

HHR

The hydrALAZINE in HHR has a moderate potential interaction with Renal Dysfunction.

The use of hydralazine has been associated with the development of glomerulonephritis. Hydralazine should be used with caution in patients with advanced renal damage and these patients may require a lower dose. Renal function should be monitored and supported as required.

Moderate:

HHR

The reserpine in HHR has a moderate potential interaction with Renal Dysfunction.

In general, lowering the blood pressure may cause some decrease in renal function. Therefore, rauwolfia alkaloids should be used with caution in patients with renal impairment, since these patients may adjust poorly to the hypotensive effects of these agents.

Thyroid Disease

Moderate:

HHR

The hydroCHLOROthiazide in HHR has a moderate potential interaction with Thyroid Disease.

Thiazide diuretics may decrease serum PBI (protein-bound iodine) levels without associated thyroid disturbance. Clinicians should be cognizant of this effect when prescribing or administering thiazide therapy to patients with thyroid disorders.

Valvular Heart Disease

Major:

HHR

The hydrALAZINE in HHR has a major potential interaction with Valvular Heart Disease.

The use of hydralazine is contraindicated in patients with mitral valvular rheumatic heart disease.

Ventricular Arrhythmia

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Ventricular Arrhythmia.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

Vomiting

Major:

HHR

The hydroCHLOROthiazide in HHR has a major potential interaction with Vomiting.

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

More resources

HHR

A total of 738 drugs are known to interact with HHR.

pramlintide

A total of 325 drugs are known to interact with pramlintide.

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.