Finasteride and Sexual Side Effects: What Real Users Are Reporting
Finasteride is prescribed in two common forms: 1mg for male pattern hair loss and 5mg for benign prostatic hyperplasia (BPH). For many people, it can slow hair thinning or improve urinary symptoms.
But in online discussions, one topic appears frequently: sexual side effects.
Across public reviews on Drugs.com and WebMD, experiences vary widely. Some men report no change at all. Others describe mild adjustments. A smaller group report more disruptive symptoms.
The user comments included in this article come from public online reviews and reflect individual experiences. They should not be interpreted as typical results or clinical evidence. Responses to treatment can vary, and medical decisions should be made with a qualified healthcare professional.
No Sexual Side Effects at All
It is important to start with balance. A number of reviewers report no change to sexual function.
One long-term user wrote:
"I have been taking this for over 8 years with zero side effects." -sty...
Another described stable sexual function:
"I have had no side effects at all. My erections are the same and ejaculations are normal." -Anonymous (65–74)
A third emphasised unchanged libido:
"No negative sexual side effects, no decreased libido." -spe...
For these men, finasteride becomes part of a routine treatment plan without noticeable sexual disruption.
Mild or Manageable Changes
For some users, sexual changes are reported but described as manageable.
One 53-year-old user acknowledged a reduction in libido but considered it acceptable:
"Yes, it lowers sex drive, but I still have more than enough." -Joe
Another described preserved function despite reduced desire:
"Sexual drive is maybe slightly less, but all is still working well once underway." -Pro...
In some cases, personal circumstances influence how the change is perceived. One reviewer explained:
"For someone like myself in a sexless marriage, the loss of interest in sex is not a bad thing." -IslandPhil
For this group, the perceived benefits of treatment may outweigh a moderate shift in libido.
Noticeable Sexual Changes
At the other end of the spectrum, some users describe changes affecting libido, erections, or ejaculation.
One reviewer balancing hair results against sexual change wrote:
"Unfortunately it makes it difficult to ejaculate and my sex drive decreased." -Clapped
Reduced semen volume appears frequently in user accounts. One man described the change succinctly:
"Watery clear ejaculations." -Ano...
Others report more pronounced changes. One reviewer summarised his experience as:
"Reduced penis size, difficult erections, greatly reduced semen volume." -jus...
These experiences are not universal, but when they occur they may be personally significant.
Timing: Early Adjustment or Something Longer?
The timing of symptoms varies between individuals.
Some men report improvement after stopping the medication. One user noted recovery within weeks:
"After around a month, my libido has shot right back up… I am back to normal." -Ano...
Another described resolution after discontinuation:
"Once I stopped taking them and all symptoms went away." -Pat
However, not all accounts describe quick recovery. One reviewer stated:
"It’s been 2 years since I stopped and I still have the sexual sides." -fin
Experiences shared online vary widely, and it is important to discuss any persistent symptoms with a healthcare professional.
Effectiveness: Why Many Continue
Amid discussions of side effects, many users also report that finasteride helps manage their condition.
One reviewer expressed satisfaction with the cosmetic result:
"I have a full head of hair." -Clapped
Another described gradual regrowth over time:
"11 months in, my hair is growing back." -Rea...
Others report benefit alongside the absence of side effects:
"It 100% works for me, with zero side effects." -Rea...
These accounts illustrate why many people continue treatment despite concerns about potential side effects.
Why Might Sexual Side Effects Occur?
Finasteride works by blocking the enzyme 5-alpha reductase, which reduces the conversion of testosterone into dihydrotestosterone (DHT). DHT plays a role in prostate growth and hair follicle activity.
Changes in DHT levels may influence aspects of sexual function in some individuals, including:
- Libido
- Erectile function
- Ejaculate volume
One reviewer reflected on this hormonal mechanism:
"It messes with your body's sensitive hormonal system." -Ano...
Clinical studies indicate that sexual side effects occur in a minority of patients, though individual responses vary.
When to Seek Medical Advice
Medical advice should be sought if you experience:
- Persistent erectile dysfunction
- Significant reduction in libido
- Symptoms that continue after stopping the medicine
- Emotional distress related to sexual changes
A healthcare professional can review treatment options and determine whether adjustments are appropriate.
Pharmacist Commentary
We asked Alessandro Grenci, Superintendent Pharmacist at Medino, for clinical perspective:
"Sexual side effects are recognised with finasteride and typically affect a small proportion of users, with most cases reported as mild and reversible. Persistent symptoms appear uncommon, but any distressing or ongoing changes should be reviewed by a healthcare professional. The decision to use finasteride should balance potential benefits with possible risks for each individual patient."
Conclusion: A Personal Risk–Benefit Decision
Online accounts illustrate a wide spectrum of experience.
For some men, sexual function appears unchanged and treatment benefits are clear. For others, changes feel significant and may lead them to stop treatment.
Finasteride affects hormone pathways, and individual responses can differ. Discussing potential risks and benefits with a healthcare professional can help ensure that treatment decisions are informed and appropriate.
