It is forbidden to drink tablets as a prophylactic against an attack. It is also forbidden to exceed the recommended dosage.
The best time to take the pill - immediately after the onset of an attack, but the medicine will be effective at any stage of it.
Usually, the drug is prescribed in a dose of 50 mg (the size of the first pill). Sometimes it is permitted to increase the dosage to 2 tablets (100 mg).
If there is no effect, you can not take a new dose during the same migraine attack. The next tablet can be taken only after the onset of a new attack.
In the presence of a reaction to the first dosage, but with the subsequent resumption of migraine manifestations, the 2nd pill is allowed to be used for the next 24 hours, with a minimum interval between doses of 2 hours. In general, a day (within 24 hours) can take no more than 300 mg of the drug.
Take the pill completely, while washing them with water.