15mg tirz here, slow responder. Stacking sema and cag finally broke my stall. My schedule: the 21st tirz with .25mg sema, the 23rd .25mg cag, then both cag and sema at .25 on the 25th and again on the 29th. Earlier, 15mg tirz alone gave me zero appetite suppression, and now it's back. Can't tell...