Hey guys im was wondering if any one has experienced any bad cramps while on Oral clen(Chinese 40mcg).started mine last weds at only 80 mcg till today i am at 120mcg. Had horrible cramps while doin abs today, felt like some one just clinchin ur stomach and twistin ,my body locked up and i fell back to the ground..i have never experienced somethin like that.... i picked up some L-taurine today see wat happens...