I'm running some clen at the moment, I have a small amount and a small amount of t3, I'm running clen at 100mcg a day and t3 at 25 and am finding the clen gives me shakes hard for about 3-4 hours, I didn't take any today as i was busy and forgot to and i could still feel it working, It's good stuff if your doing cardio with it i can feel myself getting thinner all the time(prob just in my head)