I would toss it. you're not out any $$$. Just don't think its worth the risk. I would think if there was anything that you could do with it they would have told youto do it before sending you another on. I know how you feel though, I had to toss 3 bottels of masteron once because it came out of solution and there was no way to bring it back, tried heating it and everything. Not wanting to waste it I did 1 inject and ended yp with a galof ball size knot in my ass! Took months to go away.