Proscar tablets to treat prostate enlargement in men. Proscar tablets are used to treat prostate enlargement that some men suffer from. Some suffer from inflammation of the prostate gland. Exposure of the prostate to inflammation causes many health problems, as it leads to the prostate enlarging to the size of a tonsil Therefore, it is dangerous for men, as the prostate is the one that secretes semen in men, but when it is exposed to inflammation, it causes severe pain when urinating.