Drug interactions between Darvon Compound-65 and Inderide
| Results for the following 2 drugs: |
|---|
| Darvon Compound-65 (aspirin/caffeine/propoxyphene) |
| Inderide (hydrochlorothiazide/propranolol) |
Interactions between your selected drugs
propranolol ↔ propoxyphene
Applies to:Inderide (hydrochlorothiazide/propranolol) and Darvon Compound-65 (aspirin/caffeine/propoxyphene)
MONITOR: Propoxyphene may increase the serum levels of some oral beta-blockers. The proposed mechanism is inhibition of CYP450 2D6 first-pass metabolism and decreased hepatic clearance. Data are available for metoprolol and propranolol only; however, other hepatically metabolized beta-blockers may also be affected. Renally excreted beta-blockers such as atenolol, carteolol, nadolol, or sotalol are not expected to interact.
MANAGEMENT: Patients receiving this combination should be monitored for hypotension, heart failure, bradycardia, arrhythmias, and mental status changes when propoxyphene is added to the patient's medical regimen, and for decreased beta-blockade when propoxyphene is deleted from the regimen. A reduction in beta-blocker dosage may necessary.
hydrochlorothiazide ↔ propoxyphene
Applies to:Inderide (hydrochlorothiazide/propranolol) and Darvon Compound-65 (aspirin/caffeine/propoxyphene)
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 antihypertensive agents, in particular vasodilators and alpha-blockers, may result in additive effects on blood pressure and orthostasis.
MANAGEMENT: Caution is advised during coadministration of these agents. Close monitoring for development of hypotension is recommended. 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.
propranolol ↔ aspirin
Applies to:Inderide (hydrochlorothiazide/propranolol) and Darvon Compound-65 (aspirin/caffeine/propoxyphene)
High doses of salicylates may blunt the antihypertensive effects of beta-blockers. The proposed mechanism is inhibition of prostaglandin synthesis. Low-dose aspirin does not appear to affect blood pressure. In addition, beta-blockers may exert an antiplatelet effect, which may be additive with the effects of some salicylates. Metoprolol may also increase aspirin absorption and/or plasma concentrations of salicylates; however, the clinical significance of this effect is unknown. Data have been conflicting. Until more information is available, patients who require concomitant therapy should be monitored for altered antihypertensive response whenever a salicylate is introduced or discontinued, or when its dosage is modified.
See also...
Drug Interaction Classification
The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
| 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. |
Do not stop taking any medications without consulting your healthcare provider.
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