Medication safety
Finasteride and Persistent Sexual Symptoms
Quick answer
Finasteride is associated with sexual side effects, including erectile dysfunction and reduced libido, and regulators state that sexual dysfunction may persist after treatment stops. The mechanisms, frequency and boundaries of the broader label ‘post-finasteride syndrome’ remain uncertain.
Key fact: UK safety information warns that sexual dysfunction may persist after finasteride treatment is stopped. (UK Medicines and Healthcare products Regulatory Agency, 2026; page updated )
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Key takeaways
- Finasteride can cause sexual adverse effects, and UK safety information warns that sexual dysfunction may persist after stopping.
- The frequency, mechanisms and boundaries of ‘post-finasteride syndrome’ remain uncertain.
- No credible evidence establishes PRP as a treatment for persistent symptoms after finasteride.
What is established
- Finasteride can cause sexual adverse effects during treatment.
- UK safety information warns that sexual dysfunction may persist after treatment is stopped.
- Mood changes and suicidal thoughts require prompt medical attention.
What remains uncertain
Persistent symptoms are reported, but study designs, selection bias, recall bias and varying definitions make frequency and causation difficult to quantify. A careful clinical assessment should consider other hormonal, vascular, neurological, medication and psychological contributors rather than assuming one mechanism.
What to do next
- Discuss symptoms and medication history with the prescriber or a clinician experienced in sexual medicine.
- Do not restart, stop or change prescription treatment solely on the basis of a website.
- Seek urgent help for suicidal thoughts or a marked deterioration in mental health.
- Treatments marketed as tissue repair, including PRP, should not be presented as proven for this condition.
Your physician
Dr. Niyazi Umut Özdemir
Urological Surgeon, UZ Clinic Antalya
Responsible for assessment and treatment planning at the clinic, with a clinical focus on male sexual health and penile rehabilitation.
Rated 4.5 on Google (47 reviews, as of 2 Oct 2026)Qualifications
- • Medical education at Ege University
- • Specialisation in urology
- • Turkish Association of Urology board certification
- • Clinical practice in Antalya, Turkey
Clinical focus
- • Erectile dysfunction assessment and treatment planning
- • Penile rehabilitation
- • Vasculogenic (blood-flow related) erectile dysfunction
- • Shockwave therapy, PRP and regenerative approaches
Education and roles
- • Ege University Faculty of Medicine (2000); urology specialisation, Ege University (2005)
- • Head of the Antalya branch, CİSED
Professional memberships
- • Turkish Urological Association
- • Society of Urological Surgery (Ürolojik Cerrahi Derneği)
- • European Association of Urology (EAU)
- • Turkish Andrology Association
- • Aegean Urological Association (Ege Üroloji Derneği)
- • Ankara Urologists Association
Ask the urologist about your case
Send your history and the clinic will advise which options may be relevant. Suitability is decided after medical assessment.
Frequently asked questions
Can finasteride cause erectile dysfunction?
Yes. Finasteride is associated with sexual side effects including ED and reduced libido, and UK safety information warns that sexual dysfunction may persist after treatment is stopped.
Is post-finasteride syndrome an established diagnosis?
The regulator warning is clear, but the mechanisms, prevalence and boundaries of the broader label remain uncertain because of study design limitations.
Does PRP treat persistent sexual symptoms after finasteride?
No credible evidence establishes PRP for this purpose, and treatments marketed as tissue repair should not be presented as proven for this condition.
What should I do if I have symptoms after finasteride?
Discuss symptoms and medication history with the prescriber or a clinician experienced in sexual medicine, and do not restart, stop or change prescribed treatment based on a website. Seek urgent help for suicidal thoughts or marked mental-health deterioration.
Sources
- Finasteride and Dutasteride: Updated Safety WarningsUK Medicines and Healthcare products Regulatory Agency, 2026 · Regulator
- EAU Guidelines on Sexual and Reproductive Health: Management of Erectile DysfunctionEuropean Association of Urology, 2026 · Guideline
Related guides
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Private & confidential enquiry. You do not need to call.
This page provides general information and does not diagnose ED or decide whether a treatment is suitable for you. Suitability and expected benefit vary between patients and are decided after medical assessment. Treatments described as experimental or investigational are discussed with full informed consent. Seek urgent care for chest pain, new neurological symptoms, penile injury or an erection lasting more than four hours.