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Drug Interactions between captopril / hydrochlorothiazide and DuoDote

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

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Interactions between your drugs

Moderate

captopril hydroCHLOROthiazide

Applies to: captopril / hydrochlorothiazide and captopril / hydrochlorothiazide

MONITOR: Although they are frequently combined in clinical practice, diuretics and angiotensin converting enzyme (ACE) inhibitors may have additive effects. Coadministration makes hypotension and hypovolemia more likely than does either drug alone. Some ACE inhibitors may attenuate the increase in the urinary excretion of sodium caused by some loop diuretics. Some patients on diuretics, especially those on dialysis or a dietary salt restriction, may experience acute hypotension with lightheadedness and dizziness after receiving the first dose of the ACE inhibitor. In addition, ACE inhibitors may cause renal insufficiency or acute renal failure in patients with sodium depletion or renal artery stenosis.

MANAGEMENT: Monitoring of blood pressure, diuresis, electrolytes, and renal function is recommended during coadministration. The possibility of first-dose hypotensive effects may be minimized by initiating therapy with small doses of the ACE inhibitor, or either discontinuing the diuretic temporarily or increasing the salt intake approximately one week prior to initiating an ACE inhibitor. Alternatively, the patient may remain under medical supervision for at least two hours after the first dose of the ACE inhibitor, or until blood pressure has stabilized.

References

  1. Reader C, Peyregne EA, Suarez LD "Amrinone therapy in congestive cardiomyopathy." Am Heart J 105 (1983): 1045
  2. Fujimura A, Shimokawa Y, Ebihara A "Influence of captopril on urinary excretion of furosemide in hypertensive subjects." J Clin Pharmacol 30 (1990): 538-42
  3. Funck-Brentano C, Chatellier G, Alexandre JM "Reversible renal failure after combined treatment with enalapril and furosemide in a patient with congestive heart failure." Br Heart J 55 (1986): 596-8
  4. Weisser K, Schloos J, Jakob S, et al. "The influence of hydrochlorothiazide on the pharmacokinetics of enalapril in elderly patients." Eur J Clin Pharmacol 43 (1992): 173-7
  5. Motwani JG, Fenwick MK, Morton JJ, Struthers AD "Furosemide-induced natriuresis is augmented by ultra-low-dose captopril but not by standard doses of captopril in chronic heart failure." Circulation 86 (1992): 439-45
  6. Burnakis TG, Mioduch HJ "Combined therapy with captopril and potassium supplementation: a potential for hyperkalemia." Arch Intern Med 144 (1984): 2371-2
  7. Murphy BF, Whitworth JA, Kincaid-Smith P "Renal insufficiency with combinations of angiotensin converting enzyme inhibitors and diuretics." Br Med J 288 (1984): 844-5
  8. Thind GS "Renal insufficiency during angiotensin-converting enzyme inhibitor therapy in hypertensive patients with no renal artery stenosis." J Clin Hypertens 1 (1985): 337-43
  9. Radley AS, Fitzpatrick RW "An evaluation of the potential interaction between enalapril and amiloride." J Clin Pharm Ther 12 (1987): 319-23
  10. Champ JD "Case report: azotemia secondary to enalapril and diuretic use and the diagnosis of renovascular hypertension." Am J Med Sci 305 (1993): 25-7
  11. Hume AL, Murphy JL, Lauerman SE "Angiotensin-converting enzyme inhibitor-induced cough." Pharmacotherapy 9 (1989): 88-90
  12. Lee HB, Blaufox MD "Renal functional response to captopril during diuretic therapy." J Nucl Med 33 (1992): 739-43
  13. DeQuattro V "Comparison of benazepril and other antihypertensive agents alone and in combination with the diuretic hydrochlorothiazide." Clin Cardiol 14 (1991): iv28-32;
  14. "Product Information. Vasotec (enalapril)." Merck & Co., Inc PROD (2002):
  15. McLay JS, McMurray JJ, Bridges AB, Fraser CG, Struthers AD "Acute effects of captopril on the renal actions of furosemide in patients with chronic heart failure." Am Heart J 126 (1993): 879-86
  16. Sudoh T, Fujimura A, Shiga T, et al. "Influence of lisinopril on urinary electrolytes excretion after furosemide in healthy subjects." J Clin Pharmacol 33 (1993): 640-3
  17. Lederle RM "Captopril and hydrochlorothiazide in the fixed combination multicenter trial." J Cardiovasc Pharmacol 7 (1985): S63-9
  18. "Product Information. Aceon (perindopril)." Solvay Pharmaceuticals Inc PROD (2001):
  19. Good JM, Brady AJ, Noormohamed FH, Oakley CM, Cleland JG "Effect of intense angiotensin II suppression on the diuretic response to furosemide during chronic ACE inhibition." Circulation 90 (1994): 220-4
  20. "Product Information. Capoten (captopril)." Bristol-Myers Squibb PROD (2001):
  21. "Product Information. Lexxel (enalapril-felodipine)." Astra-Zeneca Pharmaceuticals PROD (2001):
  22. "Product Information. Zestril (lisinopril)." Astra-Zeneca Pharmaceuticals PROD
  23. Cerner Multum, Inc. "Australian Product Information." O 0
View all 23 references

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Minor

atropine hydroCHLOROthiazide

Applies to: DuoDote (atropine / pralidoxime) and captopril / hydrochlorothiazide

Anticholinergic agents may increase the absorption and oral bioavailability of thiazide diuretics. The proposed mechanism involves increased gastrointestinal transit time due to reduction of stomach and intestinal motility by anticholinergic agents. In six healthy volunteers, pretreatment with propantheline prolonged the time to reach peak plasma concentration (Tmax) for hydrochlorothiazide from 2.4 to 4.8 hours and increased its total 48-hour urinary recovery by 36%. Similar results were reported for chlorothiazide in another study. The clinical significance of these changes is unknown.

References

  1. Osman MA, Welling PG "Influence of propantheline and metoclopramide on the bioavailability of chlorothiazide." Curr Ther Res Clin Exp 34 (1983): 404-8
  2. Beermann B, Groschinsky-Grind M "Enhancement of the gastrointestinal absorption of hydrochlorothiazide by propantheline." Eur J Clin Pharmacol 13 (1978): 385-7

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Minor

atropine pralidoxime

Applies to: DuoDote (atropine / pralidoxime) and DuoDote (atropine / pralidoxime)

Pralidoxime and other drugs within the family of compounds called oximes, such as obidoxime, may potentiate the pharmacologic effects of atropine. Signs of atropinization such as flushing, mydriasis, tachycardia, and dry mouth and nose may occur earlier than expected during coadministration with pralidoxime relative to administration of atropine alone, particularly if the total dose of atropine has been large and the administration of pralidoxime was delayed. Clinicians should be aware of the potential interaction and monitor patients as appropriate. Pralidoxime may be used in conjunction with atropine in the treatment of organophosphate insecticide poisoning and nerve agent poisoning in terrorism or chemical warfare.

References

  1. "Product Information. DuoDote (atropine-pralidoxime)." Meridian Medical Technologies Inc (2010):

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Drug and food interactions

Moderate

captopril food

Applies to: captopril / hydrochlorothiazide

GENERALLY AVOID: Moderate-to-high dietary intake of potassium can cause hyperkalemia in some patients who are using angiotensin converting enzyme (ACE) inhibitors. In some cases, affected patients were using a potassium-rich salt substitute. ACE inhibitors can promote hyperkalemia through inhibition of the renin-aldosterone-angiotensin (RAA) system.

MANAGEMENT: It is recommended that patients who are taking ACE inhibitors be advised to avoid moderately high or high potassium dietary intake. Particular attention should be paid to the potassium content of salt substitutes.

References

  1. "Product Information. Vasotec (enalapril)." Merck & Co., Inc PROD (2002):
  2. Good CB, McDermott L "Diet and serum potassium in patients on ACE inhibitors." JAMA 274 (1995): 538
  3. Ray K, Dorman S, Watson R "Severe hyperkalaemia due to the concomitant use of salt substitutes and ACE inhibitors in hypertension: a potentially life threatening interaction." J Hum Hypertens 13 (1999): 717-20

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Moderate

captopril food

Applies to: captopril / hydrochlorothiazide

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

atropine food

Applies to: DuoDote (atropine / pralidoxime)

GENERALLY AVOID: Use of anticholinergic agents with alcohol may result in sufficient impairment of attention so as to render driving and operating machinery more hazardous. In addition, the potential for abuse may be increased with the combination. The mechanism of interaction is not established but may involve additive depressant effects on the central nervous system. No effect of oral propantheline or atropine on blood alcohol levels was observed in healthy volunteers when administered before ingestion of a standard ethanol load. However, one study found impairment of attention in subjects given atropine 0.5 mg or glycopyrrolate 1 mg in combination with alcohol.

MANAGEMENT: Alcohol should generally be avoided during therapy with anticholinergic agents. Patients should be counseled to avoid activities requiring mental alertness until they know how these agents affect them.

References

  1. Linnoila M "Drug effects on psychomotor skills related to driving: interaction of atropine, glycopyrrhonium and alcohol." Eur J Clin Pharmacol 6 (1973): 107-12

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Moderate

hydroCHLOROthiazide food

Applies to: captopril / hydrochlorothiazide

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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Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

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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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