No, the prescribed dosage of Cyproterone Acetate for prostate cancer treatment is 300mg intramuscular injection once a month or 50mg - 100mg taken orally every day. 50mg/day is standard for transgender patients to maximally lower testosterone. The studies that show 25mg is as close to 50mg in effectiveness were experiments done to see if 50mg was necessary to maximally suppress testosterone, also Spironolactone is trash, it's the weakest AA with the most common uncomfortable side effects. Cyproterone Acetate and Bicaludamide are the strongest AAs.