IMIGRAN @ GetPharma - The Real Pharmacy: "This medicine contains the active ingredient sumatriptan, which is a type of medicine called a serotonin (or 5HT) agonist. It works by stimulating serotonin (5HT) receptors in the brain.
Serotonin is a natural substance in the brain that, among other things, causes blood vessels in the brain to narrow. Sumatriptan mimics this action of serotonin by directly stimulating the serotonin receptors in the brain. This causes the blood vessels to narrow. "
Serotonin is a natural substance in the brain that, among other things, causes blood vessels in the brain to narrow. Sumatriptan mimics this action of serotonin by directly stimulating the serotonin receptors in the brain. This causes the blood vessels to narrow. "
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