Naratriptan Hydrochloride

Описание

Naramig was launched in Germany, Sweden and the UK for use in migraine. It is chemically available via a number of related synthetic routes all having about three steps starting from 5-bromoindole. It is a new serotonin 5-HT_1B/1D receptor antagonist with modest affinity for 5-HT_1a, and very weak affinity for 5-HT₃ receptors. It has little or no affinity for a wide range of non-serotonin receptors including a- and padrenoceptors, dopamine, neurokinin NK₁, and opiate receptors. It mediates vasoconstriction in cerebral vasculature (extra cerebral intracranial vessels), reduces neurogenic inflammation, and inhibits responses mediated by the trigeminal nerves. It has a 6- and 3-fold greater affinity for 5-HT_1B, and 5-HT_1D, receptors, respectively, than sumatriptan which translates to a 2-3 fold increase in potency. The reoccurance of headache was less compared to sumatriptan, zolmitriptan and rizatriptan. Naramig had no clinical effects on blood pressure or heart rate, had a long duration of action with very good tolerability, and has high oral bioavailability.

Химические свойства

Beige Solid

Использование

Naratriptan Hydrochloride is a triptan drug and is used for the treatment of migraine headaches