I dunno, I think everbody reacts differently to the stuff, normally I never get sick when I am on at all. the only time i did was when i was using UGL test prop and UGL EQ. The eq I am on is def better that the first EQ I used however I think I may or may not be allergic to someting in this EQ b/c its just conjestion in one nostrial nothing else and I took some antihistamines today and it got a bit better. I noticed the "cold" came the day the EQ should be "broke" down by my body and being used and it was also ironically the day i discontinued DBol....I am not to worried about this I was just wondering if anybody else had this kind of petty but also odd reaction to any kind of gear. the EQ is def legit though b/c even people at my gym said they notice way more vascularity....thats not me staring in the mirror thinking i am looking vieny...ppl stopping and saying holy shit....I like EQ wayyyyy better than Deca so far.