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Drug Interactions between Inderide LA and Serpex

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

propranolol hydroCHLOROthiazide

Applies to: Inderide LA (hydrochlorothiazide / propranolol) and Inderide LA (hydrochlorothiazide / propranolol) and Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Although they are often combined in clinical practice, diuretics and beta-blockers may increase the risk of hyperglycemia and hypertriglyceridemia in some patients, especially in patients with diabetes or latent diabetes. In addition, the risk of QT interval prolongation and arrhythmias (e.g. torsades de pointes) due to sotalol may be increased by potassium-depleting diuretics.

MANAGEMENT: Monitoring of serum potassium levels, blood pressure, and blood glucose is recommended during coadministration. Patients should be advised to seek medical assistance if they experience dizziness, weakness, fainting, fast or irregular heartbeats, or loss of blood glucose control.

References

  1. Dornhorst A, Powell SH, Pensky J "Aggravation by propranolol of hyperglycaemic effect of hydrochlorothiazide in type II diabetics without alteration of insulin secretion." Lancet 1 (1985): 123-6
  2. Roux A, Le Liboux A, Delhotal B, Gaillot J, Flouvat B "Pharmacokinetics in man of acebutolol and hydrochlorothiazide as single agents and in combination." Eur J Clin Pharmacol 24 (1983): 801-6
  3. Dean S, Kendall MJ, Potter S, Thompson MH, Jackson DA "Nadolol in combination with indapamide and xipamide in resistant hypertensives." Eur J Clin Pharmacol 28 (1985): 29-33
  4. "Product Information. Lozol (indapamide)." Rhone Poulenc Rorer PROD (2002):
  5. Marcy TR, Ripley TL "Aldosterone antagonists in the treatment of heart failure." Am J Health Syst Pharm 63 (2006): 49-58
View all 5 references

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Moderate

hydrALAZINE hydroCHLOROthiazide

Applies to: Serpex (hydralazine / hydrochlorothiazide / reserpine) and Inderide LA (hydrochlorothiazide / propranolol) and Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Concomitant treatment with other antihypertensive agents or vasodilators, 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

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

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Moderate

propranolol reserpine

Applies to: Inderide LA (hydrochlorothiazide / propranolol) and Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Sympathetic ganglion-blocking or catecholamine-depleting agents such as guanethidine, reserpine, and monoamine oxidase (MAO) inhibitors may potentiate the pharmacologic effects of beta-blockers, which are thought to competitively antagonize catecholamines at cardiac and other peripheral adrenergic neurons. Combining these medications may increase the risk of hypotension, orthostasis, bradycardia, and heart failure due to excessive reduction of sympathetic activity. A case report describes two elderly patients who developed bradycardia less than 2 weeks after the initiation of phenelzine during treatment with a beta-blocker (nadolol 40 mg/day or metoprolol 150 mg/day). The pulse rates returned to normal following a 50% reduction of the nadolol dosage and discontinuation of metoprolol. In another report, a young woman developed marked orthostatic hypotension following the addition of pindolol 2.5 mg three times a day to an existing regimen of tranylcypromine. The pindolol dosage was reduced to 2.5 mg twice a day until her blood pressure stabilized, then slowly increased to 5 mg three times a day.

MANAGEMENT: Caution is advised if beta-blockers, including ophthalmic formulations, are prescribed in combination with sympathetic ganglion-blocking or catecholamine-depleting agents. Patients should contact their doctor if they experience dizziness, lightheadedness, syncope, bradycardia, shortness of breath, difficulty breathing, edema, and/or chest pain.

References

  1. Reggev A, Vollhardt BR "Bradycardia induced by an interaction between phenelzine and beta blockers." Psychosomatics 30 (1989): 106-8
  2. Pettinger WA, Soyangco FG, Oates JA "Inhibition of monoamine oxidase in man by furazolidone." Clin Pharmacol Ther 9 (1968): 442-7
  3. Goldberg LI "Monoamine oxidase inhibitors: adverse reactions and possible mechanisms." JAMA 190 (1964): 456-62
  4. "Product Information. Hylorel (guanadrel)." Rhone Poulenc Rorer PROD (2001):
  5. "Product Information. Matulane (procarbazine)." Roche Laboratories PROD (2001):
  6. De Vita VT, Hahn MA, Oliverio VT "Monoamine oxidase inhibition by a new carcinostatic agent, n-isopropyl-a-(2-methylhydrazino)-p-toluamide (MIH). (30590)." Proc Soc Exp Biol Med 120 (1965): 561-5
  7. Kronig MH, Roose SP, Walsh BT, Woodring S, Glassman AH "Blood pressure effects of phenelzine." J Clin Psychopharmacol 3 (1983): 307-10
  8. Golwyn DH, Sevlie CP "Monoamine oxidase inhibitor hypertensive crisis headache and orthostatic hypotension." J Clin Psychopharmacol 13 (1993): 77-8
  9. "Product Information. Nardil (phenelzine)." Parke-Davis PROD (2001):
  10. "Product Information. Parnate (tranylcypromine)." SmithKline Beecham PROD (2001):
  11. "Product Information. Marplan (isocarboxazid)." Roche Laboratories PROD (2001):
  12. "Product Information. Toprol-XL (metoprolol)." Astra-Zeneca Pharmaceuticals PROD (2001):
  13. Kraus RP "Pindolol augmentation of tranylcypromine in psychotic depression." J Clin Psychopharmacol 17 (1997): 225-6
View all 13 references

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Moderate

hydrALAZINE reserpine

Applies to: Serpex (hydralazine / hydrochlorothiazide / reserpine) and Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Concomitant treatment with other antihypertensive agents or vasodilators, 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

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

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Moderate

hydroCHLOROthiazide reserpine

Applies to: Inderide LA (hydrochlorothiazide / propranolol) and Serpex (hydralazine / hydrochlorothiazide / reserpine) and Serpex (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

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

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Minor

propranolol hydrALAZINE

Applies to: Inderide LA (hydrochlorothiazide / propranolol) and Serpex (hydralazine / hydrochlorothiazide / reserpine)

Hydralazine may increase serum levels of some oral beta blockers. The proposed mechanism is reduced hepatic blood flow resulting in decreased biotransformation of beta blockers that undergo extensive first-pass metabolism. The interaction is less likely to occur with sustained-release preparations. Renally excreted beta-blockers such as atenolol, carteolol, nadolol, or sotalol are not expected to interact. This combination generally tends to have beneficial effects and is used commonly in the treatment of hypertension. The patient's clinical response should be monitored. A dosage adjustment for the beta blocker may be required when given concomitantly with hydralazine.

References

  1. Schneck DW, Vary JE "Mechanism by which hydralazine increases propranolol bioavailability." Clin Pharmacol Ther 35 (1984): 447-53
  2. Stagni G, Davis PJ, Ludden TM "Human pharmacokinetics of betaxolol enantiomers." J Pharm Sci 80 (1991): 321-4
  3. Janku I, Perlik F, Tkaczykova M, Brodanova M "Disposition kinetics and concentration-effect relationship of metipranolol in patients with cirrhosis and healthy subjects." Eur J Clin Pharmacol 42 (1992): 337-40
  4. Lindeberg S, Holm B, Lundborg P, Regardh CG, Sandstrom B "The effect of hydralazine on steady-state plasma concentrations of metoprolol in pregnant hypertensive women." Eur J Clin Pharmacol 35 (1988): 131-5
  5. Piquette-Miller M, Foster RT, Kappagoda CT, Jamali F "Effect of aging on the pharmacokinetics of acebutolol enantiomers." J Clin Pharmacol 32 (1992): 148-56
  6. McLean AJ, Skews H, Bobik A, Dudley FJ "Interaction between oral propranolol and hydralazine." Clin Pharmacol Ther 27 (1980): 726-32
  7. Byrne AJ, McNeil JJ, Harrison PM, Louis W, Tonkin AM, McLean AJ "Stable oral availability of sustained release propranolol when co-administered with hydralazine or food: evidence implicating substrate delivery rate as a determinant of presystemic drug interactions." Br J Clin Pharmacol 17 Suppl (1984): s45-50
  8. Smith RL "Polymorphic metabolism of the beta-adrenoreceptor blocking drugs and its clinical relevance." Eur J Clin Pharmacol 28 (1985): 77-84
  9. McGourty JC, Silas JH, Fleming JJ, McBurney A, Ward JW "Pharmacokinetics and beta-blocking effects of timolol in poor and extensive metabolizers of debrisoquin." Clin Pharmacol Ther 38 (1985): 409-13
  10. Le Coz F, Sauleman P, Poirier JM, Cuche JL, Midavaine M, Rames A, Lecocq B, Jaillon P "Oral pharmacokinetics of bisoprolol in resting and exercising healthy volunteers." J Cardiovasc Pharmacol 18 (1991): 28-34
  11. Amemiya M, Tabei K, Furuya H, Sakairi Y, Asano Y "Pharmacokinetics of carteolol in patients with impaired renal function." Eur J Clin Pharmacol 43 (1992): 417-21
  12. "Product Information. Tenormin (atenolol)." ICN Pharmaceuticals Inc PROD (2002):
  13. "Product Information. Normodyne (labetalol)." Schering Corporation PROD (2002):
  14. "Product Information. Corgard (nadolol)." Bristol-Myers Squibb PROD (2002):
  15. "Product Information. Inderal (propranolol)." Wyeth-Ayerst Laboratories PROD (2001):
  16. McLean AJ, Wilhelm D, Heinzow BG "Stable oral availability of atenolol coadministered with hydralazine. Comparison with propranolol, metoprolol and other B-Adrenoceptor antagonists." Drugs 25 (1983): 131-5
  17. "Product Information. Blocadren (timolol)." Merck & Co., Inc PROD (2001):
  18. "Product Information. Brevibloc (esmolol)." DuPont Pharmaceuticals PROD (2001):
  19. "Product Information. Cartrol (carteolol)." Abbott Pharmaceutical PROD (2001):
  20. "Product Information. Betapace (sotalol)." Berlex Laboratories PROD (2001):
  21. "Product Information. Levatol (penbutolol)." Reed and Carnrick PROD (2001):
  22. Morgan T "Clinical pharmacokinetics and pharmacodynamics of carvedilol." Clin Pharmacokinet 26 (1994): 335-46
  23. McTavish D, Campoli-Richards D, Sorkin EM "Carvedilol. A review of its pharmacodynamic and pharmacokinetic properties, and therapeutic efficacy." Drugs 45 (1993): 232-58
  24. Seffart G ed. "Drug Dosage in Renal Insufficiency." Dordrecht, South Holland, : Kluwer Academic Publishers (1991):
  25. Limbird LE eds., Gilman AG, Hardman JG "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: McGraw-Hill (1995):
View all 25 references

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Drug and food interactions

Moderate

propranolol food

Applies to: Inderide LA (hydrochlorothiazide / propranolol)

ADJUST DOSING INTERVAL: The bioavailability of propranolol may be enhanced by food.

MANAGEMENT: Patients may be instructed to take propranolol at the same time each day, preferably with or immediately following meals.

References

  1. Olanoff LS, Walle T, Cowart TD, et al. "Food effects on propranolol systemic and oral clearance: support for a blood flow hypothesis." Clin Pharmacol Ther 40 (1986): 408-14
  2. Byrne AJ, McNeil JJ, Harrison PM, Louis W, Tonkin AM, McLean AJ "Stable oral availability of sustained release propranolol when co-administered with hydralazine or food: evidence implicating substrate delivery rate as a determinant of presystemic drug interactions." Br J Clin Pharmacol 17 (1984): s45-50

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Moderate

hydrALAZINE food

Applies to: Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Many psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants) exhibit hypotensive effects, especially during initiation of therapy and dose escalation. Coadministration with antihypertensives and other hypotensive agents, in particular vasodilators and alpha-blockers, may result in additive effects on blood pressure and orthostasis.

MANAGEMENT: Caution and close monitoring for development of hypotension is advised during coadministration of these agents. Some authorities recommend avoiding alcohol in patients receiving vasodilating antihypertensive drugs. Patients should be advised to avoid rising abruptly from a sitting or recumbent position and to notify their physician if they experience dizziness, lightheadedness, syncope, orthostasis, or tachycardia.

References

  1. Sternbach H "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol 11 (1991): 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med 101 (1984): 498-9
  3. Feder R "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry 52 (1991): 139
  4. Ellison JM, Milofsky JE, Ely E "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry 51 (1990): 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit 23 (2001): 435-40
  6. Cerner Multum, Inc. "Australian Product Information." O 0
  7. Pacher P, Kecskemeti V "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des 10 (2004): 2463-75
  8. Andrews C, Pinner G "Postural hypotension induced by paroxetine." BMJ 316 (1998): 595
View all 8 references

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Moderate

hydroCHLOROthiazide food

Applies to: Inderide LA (hydrochlorothiazide / propranolol) and Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Many psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants) exhibit hypotensive effects, especially during initiation of therapy and dose escalation. Coadministration with antihypertensives and other hypotensive agents, in particular vasodilators and alpha-blockers, may result in additive effects on blood pressure and orthostasis.

MANAGEMENT: Caution and close monitoring for development of hypotension is advised during coadministration of these agents. Some authorities recommend avoiding alcohol in patients receiving vasodilating antihypertensive drugs. Patients should be advised to avoid rising abruptly from a sitting or recumbent position and to notify their physician if they experience dizziness, lightheadedness, syncope, orthostasis, or tachycardia.

References

  1. Sternbach H "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol 11 (1991): 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med 101 (1984): 498-9
  3. Feder R "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry 52 (1991): 139
  4. Ellison JM, Milofsky JE, Ely E "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry 51 (1990): 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit 23 (2001): 435-40
  6. Cerner Multum, Inc. "Australian Product Information." O 0
  7. Pacher P, Kecskemeti V "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des 10 (2004): 2463-75
  8. Andrews C, Pinner G "Postural hypotension induced by paroxetine." BMJ 316 (1998): 595
View all 8 references

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Moderate

reserpine food

Applies to: Serpex (hydralazine / hydrochlorothiazide / reserpine)

MONITOR: Many psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants) exhibit hypotensive effects, especially during initiation of therapy and dose escalation. Coadministration with antihypertensives and other hypotensive agents, in particular vasodilators and alpha-blockers, may result in additive effects on blood pressure and orthostasis.

MANAGEMENT: Caution and close monitoring for development of hypotension is advised during coadministration of these agents. Some authorities recommend avoiding alcohol in patients receiving vasodilating antihypertensive drugs. Patients should be advised to avoid rising abruptly from a sitting or recumbent position and to notify their physician if they experience dizziness, lightheadedness, syncope, orthostasis, or tachycardia.

References

  1. Sternbach H "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol 11 (1991): 390-1
  2. Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med 101 (1984): 498-9
  3. Feder R "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry 52 (1991): 139
  4. Ellison JM, Milofsky JE, Ely E "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry 51 (1990): 385-6
  5. Rodriguez de la Torre B, Dreher J, Malevany I, et al. "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit 23 (2001): 435-40
  6. Cerner Multum, Inc. "Australian Product Information." O 0
  7. Pacher P, Kecskemeti V "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des 10 (2004): 2463-75
  8. Andrews C, Pinner G "Postural hypotension induced by paroxetine." BMJ 316 (1998): 595
View all 8 references

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Moderate

propranolol food

Applies to: Inderide LA (hydrochlorothiazide / propranolol)

ADJUST DOSING INTERVAL: Concurrent administration with calcium salts may decrease the oral bioavailability of atenolol and possibly other beta-blockers. The exact mechanism of interaction is unknown. In six healthy subjects, calcium 500 mg (as lactate, carbonate, and gluconate) reduced the mean peak plasma concentration (Cmax) and area under the concentration-time curve (AUC) of atenolol (100 mg) by 51% and 32%, respectively. The elimination half-life increased by 44%. Twelve hours after the combination, beta-blocking activity (as indicated by inhibition of exercise tachycardia) was reduced compared to that with atenolol alone. However, during a 4-week treatment in six hypertensive patients, there was no difference in blood pressure values between treatments. The investigators suggest that prolongation of the elimination half-life induced by calcium coadministration may have led to atenolol cumulation during long-term dosing, which compensated for the reduced bioavailability.

MANAGEMENT: It may help to separate the administration times of beta-blockers and calcium products by at least 2 hours. Patients should be monitored for potentially diminished beta-blocking effects following the addition of calcium therapy.

References

  1. Kirch W, Schafer-Korting M, Axthelm T, Kohler H, Mutschler E "Interaction of atenolol with furosemide and calcium and aluminum salts." Clin Pharmacol Ther 30 (1981): 429-35

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Therapeutic duplication warnings

Therapeutic duplication is the use of more than one medicine from the same drug category or therapeutic class to treat the same condition. This can be intentional in cases where drugs with similar actions are used together for demonstrated therapeutic benefit. It can also be unintentional in cases where a patient has been treated by more than one doctor, or had prescriptions filled at more than one pharmacy, and can have potentially adverse consequences.

Duplication

Thiazide and thiazide-like diuretics

Therapeutic duplication

The recommended maximum number of medicines in the 'thiazide and thiazide-like diuretics' category to be taken concurrently is usually one. Your list includes two medicines belonging to the 'thiazide and thiazide-like diuretics' category:

  • Inderide LA (hydrochlorothiazide/propranolol)
  • Serpex (hydralazine/hydrochlorothiazide/reserpine)

Note: In certain circumstances, the benefits of taking this combination of drugs may outweigh any risks. Always consult your healthcare provider before making changes to your medications or dosage.

See also

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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.

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