Oxymetholone is a superb bulking aid and a powerful steroid. It is a c17-alpha alkylated compound to protect it from deactivation by the liver, and a high percentage of the compound to enter the bloodstream. A user of Oxylone will notice a dramatic increase in muscle mass and strength. Popular manufacturers include Alpha Pharma, Eminence Labs and Hilma Biocare. Some great brand name examples include Oxyrdrolone, OxyGen and Oxymeprime .