Yesterday I took 30mg in the morning yesterday on a empty stomach. Felt zero sides. Then 20mg pre workout, no signs again. Then 20mg before bed, I can't say I felt anything, but I was sleeping haha. I took 1 cap from another brand this morning on a empty stomach and I was shaking after about 1 hour of not eating. I had to eat! I scoffed and scoffed all the lunch I packed for work by 9am. I just had 1 more cap from another brand pre workout and now I'm sitting at Nandos eating a fat burger.