The Potential Side Effects of Finasteride


" Finasteride has been associated with various side effects including problems with ejaculation, erectile dysfunction and lack of libido."


Finasteride has been used for treating hair loss in men for over decades. It is often used in conjunction with minoxidil. Many studies showed the efficacy of finasteride, however, there have been growing number of reported adverse effects associated with the use of finasteride. In the US, finasteride products should carry a warning on the label about the potential adverse effects related to sex function.

Over 15 years ago, I was prescribed with finasteride. Sadly, due to the side effects, I decided to stop taking finasteride just a few months after. What are the potential side effects of finasteride that may deter men from using it? Why finasteride can be effective against male pattern hair loss?

Dihydrotestosterone Causes Hair Loss in Men

Dihydrotestosterone is known to be the hormone which causes hair follicles to shrink and eventually stop growing hair in some men. It is still a mystery why in some men, the hair follicles are very sensitive to dihydrotestosterone. In men who suffer from male pattern hair loss, dihydrotestosterone have affected their hair growth cycle. It keeps shortening the hair-growing period and lengthening the hair-resting period until the hair follicles can no longer grow hair. The speed of this process varies individually. It is not uncommon for men to suffer from hair loss in their 20s.

Dihydrotestosterone is produced in the body through the conversion of testosterone by 5-alpha reductase, the enzyme which is involved in the steroid metabolism in the body.

Contradictory to what many people think, dihydrotestosterone rather than testosterone is the hormone which triggers the male characteristics such as deep voice, prominent facial and body hair, stronger bones and muscles. It has also been associated with male aggressive behaviour including sexual aggressiveness.


Formulated with vitamin E, menthol, rosemary, lemon, rice bran and cannabis sativa oil to rejuvenate hair follicles and improve the condition of thinning hair learn more >>>


Finasteride Reduces Dihydrotestosterone Levels in Men

Finasteride is known to reduce dihydrotestosterone levels by inhibiting the activity of 5-alpha reductase. It helps prevent the conversion of testosterone to dihydrotestosterone. As a 5-alpha reductase inhibitor, finasteride helps regulating the hair growth cycle, consequently, it helps reduce hair loss in men.

Finasteride Causes Erectile Dysfunction, Ejaculatory Problems and Lack of Libido

According to a study published in the International Journal of Impotence Research, finasteride may trigger various side effects including problems of ejaculation (7.7%), problems with erection (15.8%) and lack of libido (5.4%).

Problems with erection seems to be the most commonly side effects from using finasteride. Some studies suggest that these effects are temporary. Nevertheless, the US authority requested that the label for finasteride products carries a warning that the adverse effects may not subside even after the users stopped taking finasteride.

According to Reuters (29-September-2019), U.S. Food and Drug Administration have received 5,000 complaints about the adverse sexual effects of finasteride from 2009 to 2018. 350 out of 5,000 men who reported these side effects were also suffering with suicidal thoughts. It was said that 50 of them committed suicide.


Formulated with caffeine, niacinamide, menthol, thyme, cedarwood and rosemary oil to promote hair growth and reduce hair loss learn more >>>


Finasteride Triggers Anxiety and Depression in Men

A study involving 97 men who took finasteride for hair loss problems (American's Journal of Men's Health) showed that nearly 50% of them suffered from depression while 34% of them suffered from anxiety. It is worth to note that 17 of these men have a family history of mental disorders that may affect them too.

Alternative Hair Loss Solution

If you suffer from hair loss, always bare in mind that everyone may react differently to any drug including finasteride. Just because it has caused various problems in some men, it doesn't mean that it will do the same to you and vice versa. Women should never use finasteride as it is known to cause birth defects.

As an anti-ageing scientist who has tried both finasteride and minoxidil, I decided not to use them. It wasn't an easy decision for me. Fortunately, after 15 years of research and development, I have successfully developed my own hair loss solution, Scalp Stimulator and Hair Growth Serum.

Scalp Stimulator is a pre-shampoo hair loss treatment oil which has been specially formulated with an exclusive blend of menthol, cannabis sativa oil, stabilised vitamin E, rosemary, cedarwood, thyme, ylang ylang and lemon essential oils to help reverse the effects of dihydrotestosterone and rejuvenate hair follicles. Gently massage to the affected areas of the scalp, 20 to 30 minutes before you wash your hair with a shampoo. For best results, use it everyday.

Hair Growth Tonic is a revitalising hair serum which has been formulated with caffeine, niacinamide, menthol, rosemary, thyme, cedarwood and ylang ylang essential oils to reduce hair loss and optimise hair growth. Twice a day, preferably in the morning and evening, gently massage Hair Growth Serum into the scalp. Then style your hair as usual. Don't rinse. Ideally, use it every 12 hours. I tend to use it in the morning and at night before going to bed.


FANTASTIC! Dear Henry, today my hair loss patient who started using Henry Tianus Hair Loss Solution Products one week ago, came to my clinic and told me that Henry Tianus products are FANTASTIC. His hair look healthier and stronger already. Congratulation Henry, good job." dr. Agustin Blanch, Spain learn more >>>


Hair Grows Up to a Quarter of an Inch every month

Dealing with hair loss requires both patience and discipline. Hair can only grow up to a quarter of an inch every month, therefore, it will take time before you can see visible results. Some of the hair follicles may not respond to hair loss treatments. In general, the earlier you start using hair loss treatment products, the better the results.


Henry Tianus is a multi-award-winning Anti-Ageing Scientist based in London, UK. Henry Tianus has been listed as The Recognised Institute Practitioner at The Institute of Traditional Herbal Medicine and Aromatherapy (ITHMA), London (UK) since 2005. Henry Tianus's articles have been read by people in more than 100 countries with US and UK at the top of the list. Join Henry Tianus eNewsletter to receive the latest health and wellbeing tips. 

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Scientific Sources: Finasteride and sexual side effects, Indian Dermatology Online Journal, 2012 Jan-Apr, 3(1): 62–65; Androgen levels and components of aggressive behavior in men, Hormones and Behavior, 1987 Jun, 21(2): 170-80; Medical therapy for benign prostatic hyperplasia: sexual dysfunction and impact on quality of life, International journal of impotence research, 2003 Aug, 15(4): 299-306; Emotional Consequences of Finasteride: Fool’s Gold, American Journal of Men's Health, 2018 Jan, 12(1): 90–95; Special Report: Court let Merck hide secrets about baldness drug's risks, Reuters, 11-September-2019.



  • Dear Finfina, many thanks for sharing your experience with us. We are so sorry to hear that you have been suffering very badly with the withdrawal (post) syndrome from using finasteride in the past. May we know, how long did you take it for? Did you ever have a consultation with a doctor prior, during and after that period? How long ago did you stop using finasteride? Warmest regards from Henry Tianus, London (UK).

    Henry Tianus
  • Again another finasteride writing that gives the wrong image about finasteride side effects. Only erectile dysfunction, ejaculatory problems, loss of libido, anxiety and mental disorders mentioned. When you have PFS (Post Finasteride Syndrom) its completely more than this. Your life will be ruined completely and you are severely ill 24/7. I have had it for 3 years now and my life has been a total hell. Actually comparing it to hell its making fun of hell. When you have this you will not be able to feel anything sexually or emotionally and you dont have any senses on your skin and your body. Also often you have severe digestion problems. Also you have fatigue 24/7 and your muscles dont react to anything. And sleep dysfunction. These are just a fraction of what you will have, all of these listed would easily make 2x A4. So this article again gives a really wrong image about finasteride. Finasteride is pure evil and hell that many cant never recover. And its wrong to write that these men have anxiety or mental disorders. If you would have this you would only know. Every day all of us need to ask this question, is it worth this to suffer or kill myself. And it has nothing to do with mental disorders. This condition is impossible to explain to any healthty human, you would only understand if you have this.


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