A very close friend of 30 years died back in October due to fluid on the lungs and rapid heart rate of 140 resting. Docs tried to bring rate down through shock and meds but we're not successful. He ran too much, 100mcg ?, for far too long, 8 months straight. He didn't want to go off or lower his dose cause he was making very rapid and noticeable weight lose. I ran it at 20mcg for two weeks on one week off and I just could not deal with the uncontrollable jitters. Friends even noticed and commented on my hands shaking. Be careful with this stuff brothers, very serious and STRONG stuff. Thanks