My last cycle which consisted of the 50ml bottle of batch 001. Gave me serious flu for a while then I kinda felt like shit throughout my entire cycle & had a cough that wouldn't go away untill 3-4 weeks after i was finished w/my cycle. This time I used the 10ml bottles (004 I think but, not sure) mixed w/deca have some painful post injections but, not as bad as the last one & fortunately no flu this time at all. I do 1.75ml of QV250 & .25ml QV deca300 E3D. I think this is going to be my last run of QV test though. The results are good but, the frequent painfull injections are not my favorite thing. Time to go back to painfree Tornel or maybe I'll get rich & will be able to use something other than mexi vet grade.