Finasteride

Description

Finasteride is a 5-alpha reductase inhibitor. It blocks the conversion of testosterone into dihydrotestosterone, the hormone that shrinks hair follicles in male pattern hair loss, and the 1mg tablet is licensed to treat that condition in men. One tablet is taken each day, with or without food. Any change is gradual, and several months of continuous use are usually needed before the effect can be judged; if treatment stops, hair lost to the condition returns over the following months.

Sexual side effects including reduced desire, difficulty getting an erection and problems with ejaculation are recognised, and have been reported to continue in a small number of men after stopping. Changes in mood, including depression and suicidal thoughts, have also been reported. Finasteride lowers PSA blood test results, so mention it if a prostate test is arranged. It is not for women or children.

• 5-alpha reductase inhibitor for male pattern hair loss in men
• One 1mg tablet daily, with or without food
• Benefit is gradual and continues only while treatment continues
• Sexual side effects and mood changes are recognised risks
• Lowers PSA readings; tell any doctor arranging a prostate test
• Not for women or children; do not handle broken tablets if pregnant