RE: M.R. - IGF-1
Muscles Research IGF-1 is worthless because they dissolve their IGF-1 in an acidic enviroment. IGF-1 is a polypeptide and all polypeptides are susecable to hydrolysis (cleavage of the peptide bonds = denaturing). Polypepides undergo hydroylsis when water. If youi put them in a acidic enviroment(ie. add acetic acid) it increases the rate of hydrolysis of the peptide bonds. This is the reason why another major supplier of IGF-1 divides thier 1mg into 10 seperate vials. Buying IGF-1 in Acidic acid is the same as throughing out your money. Ask any biochemist if s/he would store a polypeptide in an enviroment with a low pH and s/he would laugh.
What Muscle research is doing is the equivalent of selling fake steriods.