yes sir, this is a wicked compound. it'll work very fast. if you know about tren, expect that...but expect it about 3 days into your cycle. if you're sensitive to tren related sides, expect them too. this stuff is not a joke and in most cases, i would suggest to steer clear. if you do use it, keep your cycles short and use the least amount that will work well. honestly, when i tried it, 500mcg was plenty to evoke some decent changes to my physique. i saw muscle seperation and more hardness within 7 days. because of how toxic it is, 3 wks is the outside limit that i would suggest using it.  if it is hot out, you'll feel more discomfort. i found that our first, hand trying to train in a gym with no AC. stuff took me down at just about the 2.5 wk point. felt as though i got heat stroke and i cut it out a few days early. i had gone up to 750mcg for about 6-7 days and i believe that if i had stayed at 500mcg, i might not have had that experience.  i was using the geneza brand OT