Ok, i went to the store today and got a pack of sleep aid, only active ingredient diphen... whatever the fuck it is, and a pack of caffeine pills.

Im planning on taking 300 mg (12x 25 mg tablets) along with 2x 200 mg caffeine pills. Is this a bad idea? Im only wondering if i'm gonna OD or if its not a good combo. If this is too much for my first time of whatever, tell me.

Appreciate the info.