Mosegor Tablets 0.5Mg (1 Strip = 10 Tablets)

Pizotifen is a tricyclic (Benzocycloheptathiophene) compound possessing structural similarities to cyproheptadine and the tricyclic antidepressant drugs. Pharmacodynamic studies demonstrate pizotifen to have powerful antiserotonin and antitryptaminic properties and marked antihistaminic effects. It also possesses weak anticholinergic effects and sedative properties.The prophylactic effect of pizotifen in migraine is associated with its ability to modify the humoral mechanisms of headache. It inhibits the permeability increasing effect of serotonin and histamine on the affected cranial vessels, thereby checking the transudation of plasmakinin so that the pain threshold of the receptors is maintained at ''''normal'''' levels. In the sequence of events leading to the migraine attack, depletion of plasma serotonin contributes to loss of tone in the extracranial vessels. Pizotifen inhibits serotonin re-uptake by the platelets, thus maintaining plasma serotonin and preventing the loss of tone and passive distension of the extracranial arteries.