Finasteride for Hair Loss – How It Works, Cost and Prescription

Finasteride is one of the most widely used medicines for male pattern hair loss. Many men dealing with thinning hair or early baldness look for clear information on how finasteride works, what it costs, and how to get a prescription. This article explains how finasteride affects your hair, the difference between the 1 mg and 5 mg strengths, its benefits and risks, and why the medicine always requires a doctor's assessment. Finasteride is a prescription medicine, so it should never be bought from unreliable online sources.

What finasteride is

Finasteride is a 5-alpha-reductase inhibitor. In practice, it blocks the enzyme that converts testosterone into dihydrotestosterone, or DHT. DHT is an androgen that plays a central role in male pattern baldness: it makes hair shorter and finer and eventually slows its growth in affected areas. By lowering DHT levels, finasteride can slow down hair thinning, and some users see an improvement in hair count over time.

Finasteride for hair loss and baldness

Finasteride 1 mg is intended specifically for male pattern hair loss, also called androgenetic alopecia, in adult men. Results usually start to become visible after 3–6 months of regular use. It is important to know that the benefit lasts only as long as treatment continues. If you stop taking finasteride, hair loss typically resumes within a few months. Finasteride is therefore not a one-time fix but a longer-term treatment, and starting it is a decision worth discussing with a doctor.

Finasteride 1 mg and finasteride 5 mg – what is the difference

Finasteride comes in two strengths, and they are meant for different uses. Finasteride 1 mg is for hair loss. Finasteride 5 mg (for example Proscar) is intended for benign enlargement of the prostate in men, not for hair loss. You should not choose the strength yourself. A doctor decides which product and dose are right for your situation.

Side effects and safety

The most common side effect of finasteride relates to sexual function, such as reduced desire or erectile difficulties. Mood changes, including depression, have also been reported. The European Medicines Agency (EMA) reviewed the safety of finasteride and dutasteride in 2024–2025, and as a result of that review, suicidal thoughts are being added to the product information of finasteride tablets as a side effect. Most of these reports concerned the 1 mg tablets used for hair loss. If you notice a low mood, depression, or other worrying symptoms, stop taking the medicine and contact a doctor. For these reasons, starting finasteride and monitoring its use always belong with a doctor.

There is also an important warning regarding women and pregnancy. Women who are pregnant or may become pregnant must not handle crushed or broken finasteride tablets, because the active substance can cause developmental abnormalities in the genitals of a male foetus. Finasteride is intended for men only.

The cost of finasteride

The price of finasteride varies depending on the strength, package size, the specific product, and the pharmacy. Whether it is an original brand or a lower-cost generic also makes a difference. Finasteride used for hair loss is generally considered a cosmetic treatment and is often not reimbursed, so it is worth checking the current price directly with a pharmacy. That way you get a figure that matches your own situation instead of relying on guesswork.

Finasteride prescription and online prescription

Finasteride is a prescription medicine, which means you can only get it with a doctor's prescription. This does not mean you have to book an in-person appointment. In many cases the prescription can be obtained remotely: a doctor assesses your situation in an online consultation, and if finasteride is a suitable and safe option for you, they can issue the prescription. This is not about ordering the medicine without a medical assessment, but a low-threshold, convenient way to consult a doctor.

An online consultation can be a good first step when your situation is suitable for remote assessment. The doctor reviews your symptoms, medical history, and any reasons the medicine might not be suitable for you. If your situation needs closer examination, the doctor will guide you further. This way you get your finasteride prescription safely and based on a proper assessment – without having to search for the medicine from uncertain online sources.

Summary

Finasteride is a well-studied and widely used prescription medicine for male pattern hair loss. It slows baldness by lowering DHT levels, and results appear within a few months – but only for as long as treatment continues. Because the medicine also carries side effects, starting it always belongs with a doctor. A finasteride prescription can often be obtained online through a doctor's assessment, which makes starting treatment both easy and safe.