normally I believe they are 20mcg/pill. You should do 2 weeks on 2 weeks off of clen & during the 2 weeks off run the ECA stack of your choice.

You normally want to ramp up with clen and once you can't handle the sides maintan that dosage for the remainder of the cycle. so even if you didn't know what they were mcg wise you could have ramped up until the sides were unbareable.

Search for the CLEN HANDBOOK, and that should answer more of your questions that I haven't been able too.