Hello Pinup78, If you run the T3 for six weeks, run the Clen, non-stop, for eight to ten weeks. Take the Benadryl on week 3 for seven days, week 6 for seven days, and week 9 for seven days. You need to run the Clen at least two weeks longer than the T3 to help your metabolism until your thyroid kicks in. Plus, your diet and cardio need to be perfect during that time.