My friend had really good experience with oxodrol-12 (an original superdrol clone). I watched it first hand. He only ran it for two weeks but it was a big difference. I can imagine what 4 weeks does.
From what I understand it's real hard on the liver and lipid values though.
S-Drol(2a,17a-dimethyl-etioallocholan,17B-ol,3-one) IS NOT A PRECURSOR to Dianabol. if it were so, the 3-oxo, 2a-methyl and 17B-hydroxyl groups would be different. It is however great for strength. It is more similar to masteron w/ the 2a-alkyl group, providing slight anti-estrogenic activity.