4-chloro-17α-methyl-androst-4-en-17β-ol-3-one is the compound ingredient contained in clostebol prohormones. 4-chloro-17α-methyl-androst-4-en-17β-ol-3-one converts into the clostebol anabolic steroid. 4-chloro-17α-methyl-androst-4-en-17β-ol-3-one is a methylated prohormone. Therefore, anyone taking a clostebol prohormone should take a liver support supplement or a full cycle support supplement. 4-chloro-17α-methyl-androst-4-en-17β-ol-3-one normal dosage is 50-75mg per day. Results given (mass gains, strength increase) by clostebol prohormones are very similar to halodrol and promagnon prohormones.