How do I know if the Clenbuterol i got isn't any good? I'm not one for complaining but I was told 25mcg would be more than enough to start with but I felt nothing. I tried 50mcg, nothing, 100mcg and nothing either. My buddy gave me 2x50mcg clen pills to try so once I wake up from nights I'll give them a try. Can anyone share their experience with Clenbuterol? I drink a lot of caffine so I hope I dont have a high tolerance to it. Thanks guys