"So, I looked up Finasteride on Google and I get all sorts of results and I don’t know what to believe..."
With conflicting information circulating around the internet, it can be confusing for new patients to get to grips with information on Finasteride and its potential side effects. Studies have shown that the drug has an impressive 66% success rate in reversing male pattern baldness after just two years. However, like most drugs, some men may experience side effects from Finasteride and it’s important to be aware of these before you make a decision on whether you would like to take it or not.
How does it work?
Finasteride works by blocking the conversion of testosterone into the hormone dihydrotestosterone (DHT for short), which causes miniaturisation of hair follicles and, eventually, hair loss. This conversion is a result of the action of an enzyme known as 5 alpha (5α) Reductase, which is genetically inherited.
Finasteride works by disrupting this conversion process by targeting the 5α Reductase enzyme and stopping the production of DHT. As DHT is one of the major reasons for hair follicle damage, Finasteride can prevent further hair loss by reducing DHT levels. The end result? Less DHT, more hair!
What are Finasteride side effects?
While there is a lot of conflicting information online and it can be hard to tell the facts from the unfounded, like with any medication there are still some things to be aware of. Finasteride side effects are both rare and usually reversible, so you should feel confident when you start your treatment plan.
Like all medication, it is important that you read the accompanying patient information leaflet (PIL) prior to taking it and satisfy yourself that you understand the potential risk of taking that medication.
From lowering your stress levels to eating healthier, there are plenty of ways to help improve the health of your hair, alongside our treatment plans. Here are a few of our favourites.
These side effects happen in less than 5% of men who take Finasteride and usually resolve on stopping. There have also been reports of erectile dysfunction among some patients. However, a study published in the British Medical Journal in 2016 showed that Finasteride does not statistically significantly increase the risk of erectile dysfunction versus placebo, whether Finasteride was taken as a 1mg dose for hair loss or a 5mg dose used in men with Benign Prostatic Hypertrophy.
There have been some reports of cases of Finasteride being associated with an increased risk of prostate cancer. Fortunately, this claim has been consistently disproved by a variety of studies and, in some cases, Finasteride has been shown to decrease the chances of developing prostate cancer by up to 25%. In terms of screening for prostate cancer, Finasteride can lower the Prostate Specific Antigen blood test, making it falsely reassuring - so it is advised to let your GP know that you are taking Finasteride, and they will usually halve the age-adjusted reference range when screening for prostate cancer to account for this.
There have also been reports of mood alteration and depressive side effects of Finasteride which could possibly persist after stopping the medication. Whilst a direct causal link has not been proven linking Finasteride with depression, out of an abundance of caution Sons do not recommend Finasteride for those with untreated or moderate to severe anxiety or depression.
A full list of potential side effects can be found in the Sons patient information leaflet here.
The majority of evidence concludes that any side effects associated with Finasteride happen in the first six months of use and are in most cases reversible once the medication has stopped being administered.
Can I reduce the risk of Finasteride side effects?
So - is it possible to reduce the likelihood of getting side effects? Finasteride is available in a Topical Spray, which has a lower risk of side effects as the medication works locally (at the scalp) rather than being absorbed systemically (into the bloodstream). If you have experienced side effects with oral Finasteride, or you are worried about the risk, you could consider topical Finasteride instead.
Why should I use this treatment?
Finasteride has been used as a treatment for male pattern baldness for over 20 years and is an effective prescription treatment for male pattern hair loss. There are plenty of significant medical journals that capture data from thousands of patients worldwide and testify to Finasteride’s efficacy and safety.
Millions of people around the world take Finasteride on a daily basis, over 1 million of which are estimated to be taking it for hair loss in the United States alone. Despite the rare side effects of Finasteride, it is still the most effective medication at slowing male pattern hair loss and is effective in up to 90% of men who take it.
The evidence suggests that overall Finasteride is a very safe and effective drug. Side effects are rare, but not impossible. We advise all of our patients to familiarise themselves with potential risks and benefits of taking any new medication found in the patient information leaflet and to check with their primary care physician or GP about whether they are safe to take with any current medication.
The team at Sons are more than happy to discuss questions or queries you may have about Finasteride. If you’re keen to treat your hair loss, Finasteride can be combined with other products such as Minoxidil, Biotin and DHT-blocking shampoo to help you regain control of your hair growth. Ultimately, only you can decide whether Finasteride is the right medication for you - our aim is to present the facts and help you make an informed decision.
The content provided in this article is not a substitute for professional medical diagnosis or treatment. You should not rely upon the information provided in this article for specific medical advice. Prior to starting any medication you should consult with your primary care provider if you are on any other medication to ensure that it is safe to do so and read the patient information leaflet, paying particular attention to potential side effects. If you have any questions or concerns, please talk to your doctor.
All of our blog articles are reviewed by our Medical Director before publication.
