Teslac is similar in configuration to androgenic steroids but it does not exhibit any androgenic effects. Teslac is an estrogen antagonist indicated for use in women with breast cancer. Steroid users take the drug to prevent the effects of high estrogen caused by aromatising steroids. It has been found to be quite effective for many. Some prefer it to Nolvadex for preventing gynecomastia and water retention. Unfortunately it is rarely seen on the black market. Teslac is available by prescription for some. Effective dosages are from 500mg to 1000mg per day. No side effects have been reported with dosages at this level or even higher.