well i compared the bottles at first and the date and lot number was placed in a different spot than all the other mdrols i had, the pills were slightly larger than the other ones and the color of the powder was a little yellower(but i was told that CEL had another company make the pills and they used different caps), but this was the weird part. usually when i take any ph, the pump is 3x as stronger than working out without them. on the batch from NA, i popped 2 pills and the pump was weak, i didnt feel any strength increase or extra aggression and when i popped 2 of my previous mdrol pills, the pump was ridiculous and my aggression increased. but then i popped 3 of NA ones and then i felt the pump so it was either under dosed or idk. but i dont buy from them anymore after that