Ok so you're on 12.5 mg which is probably at the upper level of what most doctors will prescribe of tirz... There could be other reasons for your stall... too many calories, not enough calories, not enough protein, are you pooping? Drinking water? Exercising? Why do you think it's not effective? As for the pricing- one of the many many many topics covered here are research peptides and pricing of such... for, you know, research purposes. Dive deep into the boards. Do a search for keywords such as stall, stacking, pricing, dosage, etc etc. Have you brought your concerns to your prescriber? Are you counting calories and macros?