Is Finasteride safe for long term use?

Finasteride, commonly recognised under the brand name Propecia, is a widely used medication for treating hair loss and conditions like an enlarged prostate. Since it’s often required for extended periods to maintain its benefits, many users wonder about the long-term safety of this medication. Below, we’ll explore the evidence behind its safety, its effectiveness, and any potential side effects.

Key Takeaways

Effective for Hair Loss and Prostate Health

• Finasteride slows hair loss, stimulates regrowth, and reduces the risk of prostate cancer by 25%. It’s safe for long-term use when taken as prescribed.

Results Take Time

• Visible hair regrowth may begin after 3–4 months, with full benefits taking 6–12 months. Stopping treatment will reverse its effects, so consistent use is key.

Potential Side Effects Are Rare

• Some users report mild sexual side effects like reduced libido, but these are rare and usually temporary. Persistent issues are extremely uncommon. Always consult a doctor if you have concerns.

Finasteride is a trusted option for many men dealing with hair loss or prostate issues.

What Is Finasteride?

Finasteride belongs to a class of drugs known as 5-alpha-reductase inhibitors. It works by reducing levels of dihydrotestosterone (DHT), a hormone responsible for hair loss and prostate enlargement. Finasteride is commonly prescribed to:

• Slow or prevent hair loss.

• Stimulate hair regrowth.

• Treat benign prostatic hyperplasia (BPH).

Is Finasteride Safe for Long-Term Use?

Scientific Evidence on Long-Term Use

Extensive studies, including a large-scale Prostate Cancer Prevention Trial involving 19,000 men, have shown that finasteride is safe for long-term use. Participants took finasteride for years, and researchers concluded that there was "little need to worry" about long-term consequences.

Key Findings:

• Finasteride reduces the risk of prostate cancer by approximately 25%.

• Long-term follow-ups (spanning over two decades) confirmed its safety, with fewer than 100 men in the study dying from prostate cancer.

Conclusion: Finasteride is considered a safe, effective, and low-cost treatment option for long-term use.

How Long Does Finasteride Take to Work?

Finasteride requires patience to deliver noticeable results.

• Initial Results: Some hair regrowth may be visible after 3–4 months.

• Full Results: It typically takes 6–12 months to achieve the full benefits.

• Prevention of Hair Loss: Many users may not see new growth but benefit from a significant slowdown in hair loss.

Potential Side Effects of Long-Term Use

1. Sexual Side Effects

One of the most discussed concerns about finasteride is its potential to cause sexual dysfunction.

Reported Side Effects:

• Decreased libido.

• Difficulty achieving or maintaining an erection.

• Reduced semen volume.

Statistics:

• In the study of 19,000 men, 3.8% of finasteride users reported sexual side effects, compared to 2.1% in the placebo group.

• A very small subset of users may experience persistent sexual dysfunction lasting for months or years after discontinuing finasteride.

Persistent Sexual Dysfunction

Persistent issues are rare but possible. A separate study found that 96% of men who reported sexual dysfunction lasting over three months continued to experience symptoms after 14 months.

While the risk exists, the NHS has described the likelihood of persistent problems as "extremely small."

2. Prostate Cancer Risk

Contrary to some concerns, finasteride does not cause prostate cancer. In fact, it reduces the risk of developing this disease by 25%, making it a preventive option for those at higher risk.

3. Hormonal Effects

Finasteride can slightly increase testosterone levels because it blocks the conversion of testosterone into DHT. This increase is generally mild and unlikely to cause significant issues. However, if you’re concerned about your testosterone levels, speak to your doctor about testing and potential treatments.

Does Finasteride Permanently Regrow Hair?

The benefits of finasteride are not permanent. If you stop taking it, any regrown hair will gradually fall out, and the natural progression of hair loss will resume. For long-lasting results, you’ll need to continue taking the medication consistently.

Who Should Avoid Finasteride?

While generally safe, finasteride may not be suitable for everyone. Avoid using this medication if you:

• Have a known allergy to finasteride.

• Are pregnant or planning pregnancy (it can cause birth defects if handled or ingested by pregnant women).

• Have severe liver conditions or are taking certain other medications.

Is Finasteride Right for You?

Finasteride is a well-tolerated and effective option for most men dealing with hair loss or BPH. While there are potential side effects, they are rare and typically resolve after discontinuing the medication. If you’re unsure whether finasteride is the right choice, consult with a healthcare professional to discuss your concerns and medical history.

Alternatives to Finasteride

If finasteride doesn’t suit you, other options include:

• Minoxidil: A topical treatment for hair regrowth.

• Hair Transplant Surgery: A permanent solution for hair restoration.

• Lifestyle Changes: Improving diet and reducing stress may help slow hair loss.

Final Thoughts

Finasteride is widely regarded as a safe and effective long-term treatment for hair loss and prostate enlargement. While side effects like sexual dysfunction are possible, they affect only a small percentage of users, and the risk of persistent issues is minimal. Regular use can yield significant benefits in both hair retention and overall health, particularly in reducing prostate cancer risk.

If you’re considering starting finasteride, consult your doctor or try a free online consultation with UK Meds to determine if it’s right for you.