The dose that fly gave you, is what I do....sometimes I do it for 6 weeks and do 75mcg for 2 weeks in a row, then ramp back down. You can take a combo of clen and ECA at the same time. Clen should be taken for only 2 weeks at a time. So the first 2 weeks use clen, the next 2 weeks use ECA...then back to clen, and then back to ECA...don't take clen and ECA at the same time. As far as rebound from T3, no...I don't really think that clen will help with that, but some people do think it does. I just don't see how it can when they are 2 diffrent types of drugs. Clen is an asthma med that works as a thermo, and T3 is a thyroid drug. So to me, it just doesn't make since. I have used T3 alone a couple of times, and have had no problems. Good Luck!!