Finasteride is a prescription medication classified as a 5-alpha-reductase inhibitor. Originally developed in the 1980s for treating enlarged prostate (BPH), it received FDA approval in 1997 specifically for male pattern hair loss under the brand name Propecia. The drug works by interrupting the biochemical pathway that produces DHT, a hormone that genetically susceptible hair follicles are highly sensitive to. When DHT levels drop, the miniaturisation cycle that progressively thins and shortens hair is interrupted, allowing follicles to recover and resume normal growth patterns. Over 30 years of peer-reviewed clinical research confirms that a daily 1 mg dose reduces serum DHT by roughly 68% and scalp DHT by approximately 60%, making it the most potent oral anti-hair-loss therapy currently available. More than 40 million men worldwide have used finasteride, establishing an extensive safety database that supports its long-term tolerability.

Finasteride is taken as a 1 mg tablet once daily, with or without food. Consistency is key—the medication must be taken every day without interruption to maintain its therapeutic effect. It is important to understand that finasteride is a long-term treatment; if you stop taking it, DHT levels return to pre-treatment levels within a few weeks, and any hair maintained or regrown through the medication will gradually be lost over 6-12 months. Finasteride is approved for use in men only and is not recommended for women, particularly those who are pregnant or may become pregnant, due to the risk of birth defects. Women should not handle crushed or broken finasteride tablets. Potential side effects, though uncommon (affecting approximately 2-4% of users), can include decreased libido, erectile dysfunction, and reduced ejaculate volume. These side effects typically resolve upon discontinuation of the medication. All patients should have a thorough consultation with a qualified physician and undergo appropriate screening before starting finasteride. At Barley Hospital, our specialists provide comprehensive evaluation and ongoing monitoring to ensure safe and effective treatment.

Results from finasteride treatment follow a predictable timeline. During the first 3 months, patients typically notice a reduction in daily hair shedding as DHT levels drop and follicles begin to stabilise. Between months 3-6, early signs of improvement may appear, with hair loss visibly slowing or stopping. By months 6-12, many patients observe measurable increases in hair density and thickness, particularly at the crown and mid-scalp regions. Maximum benefits are generally achieved after 12-24 months of continuous treatment. After the two-year mark, the medication continues to maintain results with ongoing use. It is important to document progress with standardised photographs, as gradual improvements can be difficult to notice day to day. Finasteride works best as part of a comprehensive hair restoration strategy—many of our patients use it in combination with minoxidil, PRP therapy, and/or hair transplantation for optimal, long-lasting results. Our medical team at Barley Hospital develops personalised treatment protocols and provides regular follow-up assessments to track your progress and adjust as needed.