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Drug Interactions between 5-hydroxytryptophan / melatonin / pyridoxine and modafinil

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

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Interactions between your drugs

Moderate

melatonin modafinil

Applies to: 5-hydroxytryptophan / melatonin / pyridoxine and modafinil

Consumer information for this interaction is not currently available.

MONITOR: Coadministration with CYP450 1A2 inducers may decrease the plasma concentrations and therapeutic effects of melatonin. The proposed mechanism is increased melatonin clearance due to induction of CYP450 1A2. However, clinical data are lacking.

MANAGEMENT: Caution is advised if melatonin is used concomitantly with drugs that are inducers of CYP450 1A2. Dosage adjustments may be considered whenever CYP450 1A2 inducers are added to or withdrawn from therapy with melatonin.

Drug and food interactions

Moderate

melatonin food

Applies to: 5-hydroxytryptophan / melatonin / pyridoxine

Both smoking and excessive caffeine consumption can alter the blood levels of melatonin, which may affect the dosing. Tobacco smoking reduces, while caffeine increases melatonin blood levels. If you start smoking or undergo smoking cessation, your doctor may need to adjust the dose of melatonin. In addition, alcohol may reduce the effect of melatonin on sleep. It is best to avoid alcohol consumption during melatonin therapy. Talk to a healthcare professional if you have any questions or concerns. 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.

Minor

modafinil food

Applies to: modafinil

Information for this minor interaction is available on the professional version.

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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