That's half right. The blue and grey is generic Fioricet #3. But the Blue and Yellow is not name brand Fioricet it is Fiorinal #3. The only differnece is the yellow has asprin and the grey uses tylenol. Everything else is the same. One really odd thing is one is a schedule III the other Schedule IV. It is one of the oddball scheduled meds since the parts making is scheduled are the same, yet using Tylenol instead of Asprin pushes it from a C-IV to C-III???

Farmer

PS: The Fiorinol actually works better for me. There is nothing in the Fioricet that reduces swelling and some headaches are at least in part caused by localized swelling