Drug Interactions between Inderal LA and Maxiphen
This report displays the potential drug interactions for the following 2 drugs:
- Inderal LA (propranolol)
- Maxiphen (guaifenesin/phenylephrine)
Interactions between your drugs
propranolol phenylephrine
Applies to: Inderal LA (propranolol) and Maxiphen (guaifenesin / phenylephrine)
Using phenylephrine together with a beta-blocker like propranolol may lead to an increase in blood pressure. Some beta-blockers may enhance the effects of phenylephrine, which can lead to constriction of your blood vessels and an increase in blood pressure. Contact your doctor if your condition changes. You may need a dose adjustment or your blood pressure checked more often if you 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.
Drug and food interactions
propranolol food
Applies to: Inderal LA (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.
propranolol food
Applies to: Inderal LA (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.
phenylephrine food
Applies to: Maxiphen (guaifenesin / phenylephrine)
Consumer information for this interaction is not currently available.
MONITOR: Coadministration of two or more sympathomimetic agents may increase the risk of adverse effects such as nervousness, irritability, and increased heart rate. Central nervous system (CNS) stimulants, particularly amphetamines, can potentiate the adrenergic response to vasopressors and other sympathomimetic agents. Additive increases in blood pressure and heart rate may occur due to enhanced peripheral sympathetic activity.
MANAGEMENT: Caution is advised if two or more sympathomimetic agents are coadministered. Pulse and blood pressure should be closely monitored.
References
- Rosenblatt JE, Lake CR, van Kammen DP, Ziegler MG, Bunney WE Jr "Interactions of amphetamine, pimozide, and lithium on plasma norepineophrine and dopamine-beta-hydroxylase in schizophrenic patients." Psychiatry Res 1 (1979): 45-52
- Cavanaugh JH, Griffith JD, Oates JA "Effect of amphetamine on the pressor response to tyramine: formation of p-hydroxynorephedrine from amphetamine in man." Clin Pharmacol Ther 11 (1970): 656
- "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc PROD (2001):
- "Product Information. Tenuate (diethylpropion)." Aventis Pharmaceuticals PROD (2001):
- "Product Information. Sanorex (mazindol)." Novartis Pharmaceuticals PROD (2001):
- "Product Information. Focalin (dexmethylphenidate)." Mikart Inc (2001):
- "Product Information. Strattera (atomoxetine)." Lilly, Eli and Company (2002):
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
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
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. | |
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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