ive been prescribed naramig for my migranes which contains 2.5mg of naratriptan. all i know is that this is not a painkiller, just anti-migrane, my doctor didnt give me anymore info. Ive been trying to find out about naratriptan but have been unsuccessful. Can someone tell me what it is or is similar to?

Also, for some reason i said i get migranes at least once a fortnight on average, while i actually get them more than that. is there anyway of fixing that without my doctor thinking im trying to swindle him for a bigger or false prescription? because i only get 2 tablets at a time.
any help would be apreciated