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Sumatriptan

Also indexed as: Imitrex®

Sumatriptan is a member of the selective serotonin receptor agonist family of drugs used to treat, but not prevent, migraine headaches. Sumatriptan is available in injection, nasal spray, and oral tablet forms.

Interactions with Dietary Supplements

5-Hydroxytryptophan (5-HTP) and L-tryptophan
Sumatriptan works by stimulating serotonin receptors in the brain. 5-HTP and L-tryptophan are converted to serotonin in the brain, and taking them with sumatriptan could increase sumatriptan-induced side effects. However, no interactions have yet been reported with sumatriptan and 5-HTP or L-tryptophan.

Interactions with Foods and Other Compounds

Food
Sumatriptan tablets may begin to work faster when taken with fluid on an empty stomach at the first sign of migraine.1 2

Summary of Interactions for Sumatriptan

Depletion or interference None known
Adverse interaction 5-Hydroxytryptophan (5-HTP)*
L-tryptophan*
Side effect reduction/prevention None known
Supportive interaction None known
Reduced drug absorption/bioavailability None known

For the convenience of the reader, the information in the summary is categorized as follows: “Depletion or interference” indicates the drug may deplete or interfere with the absorption or function of the supplement or herb. “Adverse interaction” indicates that the supplement or herb used together with the drug may result in undesirable effects. “Side effect reduction/prevention” indicates the supplement or herb may reduce the likelihood and/or severity of a potential side effect caused by the drug. “Supportive interaction” indicates the supplement or herb may support or aid the function of the drug. “Reduced drug absorption/bioavailability” indicates that the supplement or herb may decrease the absorption and/or activity of the drug in the body. An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.

References:

1. Threlkeld DS, ed. Central Nervous System Drugs, Agents for Migraine, Serotonin 5-HT1 Receptor Agonists. In Facts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Jun 1996, 256a.

2. Holt GA. Food & Drug Interactions. Chicago: Precept Press, 1998, 253.