• Reduces more DHT, the hormone that causes hair loss.
  • Specifically formulated for male pattern hair loss.
  • Convenient Dosing: One capsule, once a day.

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Overview

Still noticing hair thinning despite trying other options? Dutasteride 0.5mg is a powerful once-daily capsule that works deeper than finasteride, blocking both types of the enzyme that convert testosterone into DHT - the main culprit behind male pattern baldness. For many men, this means stronger, longer-lasting results and the chance to restore thicker, fuller hair.
Every order at SwiftMedi is carefully reviewed by a UK-registered prescriber, with discreet delivery to your door.


What is Dutasteride 


Dutasteride is a prescription medicine used to treat male pattern hair loss. Like finasteride, it reduces levels of the hormone dihydrotestosterone (DHT), but it blocks both type I and type II 5-alpha reductase enzymes — making it more potent for some men.

  • Form: soft gelatin capsule
  • Dose: 0.5mg once daily
  • Who it’s for: adult men with male pattern baldness


Off-label use: in the UK, dutasteride is licensed for prostate enlargement, but it’s widely prescribed by specialists for hair loss when clinically appropriate.

Directions

  • Take one 0.5mg capsule once daily, with or without food.
  • Swallow whole — do not crush or chew.
  • Consistency is key: take it at the same time each day.
  • It usually takes 3–6 months before results become noticeable.
  • Stopping treatment will likely cause hair loss to return.

Side Effects

Like all medicines, Dutasteride can cause side effects, although not everyone gets them.

Common (may affect up to 1 in 100 people):

  • Reduced sex drive (libido)
  • Difficulty getting or maintaining an erection
  • Changes in ejaculation

Less common (may affect up to 1 in 1,000 people):

  • Breast tenderness or swelling
  • Pain or discomfort in the testicles
  • Feelings of low mood or depression

Rare but serious (seek medical advice immediately):

  • Signs of a severe allergic reaction: swelling of the face, lips, tongue or throat, severe dizziness, or difficulty breathing.
  • Worsening depression or suicidal thoughts.

Disclaimer: This is not a complete list of side effects. Always read the patient information leaflet that comes with your medicine. If you notice anything unusual or concerning, stop using the medicine and seek medical advice promptly. In an emergency, call 999 or go to A&E.

Warnings

Dutasteride may not be suitable if you:

  • Have liver problems
  • Are allergic to dutasteride or similar medicines


Important notes:

  • Not for use in women or children.
  • Women who are pregnant must not handle leaking capsules, as it can harm a developing male foetus.
  • Men taking dutasteride should avoid donating blood until at least 6 months after their last dose (to prevent exposing pregnant women).
Frequently asked questions

  • What is dutasteride and how does it work for hair loss?

    Dutasteride lowers levels of DHT, the hormone that shrinks hair follicles in male pattern hair loss. It blocks both type I and type II enzymes, making it more potent than finasteride in reducing DHT. It is used off-label for hair thinning.

  • Is dutasteride stronger or more effective than finasteride?

    Dutasteride lowers DHT more than finasteride and may improve density in men who respond less well to finasteride. Both medicines work on the same pathway,  but dutasteride is considered more potent.

  • How long does dutasteride take to work?

    Dutasteride works gradually, like all hair loss treatments. Most men notice early changes after three months, with fuller results between six and twelve months. Consistent daily use is essential to maintain improvement.

  • Is dutasteride safe to use long term?

    Yes. Dutasteride is generally well tolerated when monitored, and many men use it long term. Regular reviews help ensure the treatment remains safe, suitable and effective for your health needs.

  • What are the common side effects of dutasteride?

    Some men experience reduced libido, difficulty with erections or lower semen volume. These effects are usually mild and reversible. Very few men experience long-lasting symptoms, and most tolerate the medicine well. 

  • Is dutasteride licensed for hair loss in the UK?

    No. Dutasteride is licensed for prostate enlargement, but specialists sometimes prescribe it off-label for male pattern hair loss when other treatments have not been effective. A prescriber will check suitability during consultation.

  • Can I buy dutasteride online in the UK?

    Yes. Dutasteride can be bought from a UK-registered online pharmacy after a consultation. Because it is prescribed off-label for hair loss, a clinician will assess your symptoms and medical history carefully before supply.

  • Does dutasteride help with a receding hairline or temples?

    Dutasteride may help stabilise a receding hairline and improve density, although the temples respond more slowly than the crown. Some men see stronger results with dutasteride if finasteride has offered only partial improvement.

  • Why is dutasteride considered more potent for DHT reduction?

    Dutasteride blocks both type I and type II 5-alpha-reductase enzymes, whereas finasteride blocks only type II. This results in a greater overall reduction in DHT,  which may lead to enhanced regrowth or better stabilisation for some men.

  • Can I take dutasteride and minoxidil together?

    Yes. Combining dutasteride with minoxidil is often recommended because they work in different ways: dutasteride targets DHT, while minoxidil stimulates hair follicles. Using both can improve regrowth and stabilisation.

  • What happens if I stop taking dutasteride?

    If you stop Dutasteride, DHT levels rise over several weeks and hair loss usually returns. Any gains in thickness will gradually reduce, so long-term use is often recommended for sustained results.

  • Does dutasteride affect sexual function or fertility?

    A small number of men notice reduced libido or erection changes, but these effects often settle with continued use or after stopping the medicine. Fertility changes are uncommon and usually reversible.

  • Can dutasteride cause mood changes?

    Mood changes are uncommon, but some men report low mood or anxiety. If this happens, speak to a clinician so your treatment can be reviewed safely and alternative options can be discussed.

  • Who should not take dutasteride?

    Dutasteride is not suitable for men with significant liver disease, anyone allergic to the medicine or for those trying to conceive. It must not be handled by women who are pregnant or may become pregnant.

  • Is dutasteride suitable if finasteride hasn’t worked?

    Some men who see limited response with Finasteride notice better stabilisation or regrowth when switched to Dutasteride. A clinician will review your hair loss pattern and medical history before recommending a change.

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