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Drug Interactions between propranolol and S-Caine Peel

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

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Interactions between your drugs

Moderate

propranolol lidocaine topical

Applies to: propranolol and S-Caine Peel (lidocaine / tetracaine topical)

Consumer information for this interaction is not currently available.

MONITOR: Some beta-blockers may increase lidocaine levels and risk of toxicity. This interaction may also apply to topical formulations of lidocaine. The proposed mechanism is inhibition of CYP450 metabolism and/or decreased cardiac output and hepatic blood flow resulting in decreased hepatic metabolism of lidocaine. In addition, beta-blockers and lidocaine may also have additive negative inotropic effects on the heart. Data have been conflicting and variable. The degree of systemic absorption of topical lidocaine may be dependent on the duration of application and the applied surface area.

MANAGEMENT: Patients receiving concurrent therapy should be monitored for drowsiness, mental status changes, bradycardia, and hypotension. Lidocaine levels should be obtained when clinically necessary. If toxicity is suspected, the lidocaine infusion should be decreased, as possible or the topical formulation of lidocaine should be discontinued.

Drug and food interactions

Moderate

propranolol food

Applies to: propranolol

Food can enhance the levels of propranolol in your body. You shoud take propranolol at the same time each day, preferably with or immediately following meals. This will make it easier for your body to absorb the medication. Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking propranolol. Propranolol is only part of a complete program of treatment that also includes diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely.

Moderate

propranolol food

Applies to: propranolol

Using propranolol together with multivitamin with minerals may decrease the effects of propranolol. Separate the administration times of propranolol and multivitamin with minerals by at least 2 hours. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Moderate

propranolol food

Applies to: propranolol

Consumer information for this interaction is not currently available.

MONITOR: Smoking cessation may lead to elevated plasma concentrations and enhanced pharmacologic effects of drugs that are substrates of CYP450 1A2 (and possibly CYP450 1A1) and/or certain drugs with a narrow therapeutic index (e.g., flecainide, pentazocine). One proposed mechanism is related to the loss of CYP450 1A2 and 1A1 induction by polycyclic aromatic hydrocarbons in tobacco smoke; when smoking cessation agents are initiated and smoking stops, the metabolism of certain drugs may decrease leading to increased plasma concentrations. The mechanism by which smoking cessation affects narrow therapeutic index drugs that are not known substrates of CYP450 1A2 or 1A1 is unknown. The clinical significance of this interaction is unknown as clinical data are lacking.

MANAGEMENT: Until more information is available, caution is advisable if smoking cessation agents are used concomitantly with drugs that are substrates of CYP450 1A2 or 1A1 and/or those with a narrow therapeutic range. Patients receiving smoking cessation agents may require periodic dose adjustments and closer clinical and laboratory monitoring of medications that are substrates of CYP450 1A2 or 1A1.

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.

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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