So I just got some bpc157 from Q.. maybe I can help, first vial i reconstituted was right out of the box , room temperature, 1ml of bactsteriostatic water , clear as day.. so then I put the remaining kit in the fridge , when it was time for reconstituting 2nd vial , this time it hardly dissolved and there were visible floaters all over , no matter how long I swirled it etc.. so then the. 3rd time I Took the vial out the night before and let it sit overnight before I reconstituted, this time it was clear as day like the very 1st vial .. so don’t keep in fridge until after reconstituted, hope this helps ya bro .. no issues tho at all with TB500