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Dutasteride 0.5mg Capsules

  • Effective treatment for male pattern hair loss
  • Contains 0.5mg dutasteride
  • Take once daily for best results
  • Available from a licensed UK pharmacy
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Fast & Free Delivery Options

Variety of delivery options including next day & free delivery.

100% UK-based Pharmacy

Pharmacy, clinic and prescribers based in Greater Manchester.

Free Online Consultations

Start your treatment with a quick and free online consultation.

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Dutasteride for Hair Loss Treatment

Medication Name Dutasteride Capsules 0.5mg
Brand Name Brand may vary
Medication Form Capsule
Used For Male Pattern Hair Loss (Androgenetic Alopecia)
Active Ingredients Dutasteride
Side Effects Decreased libido, erectile dysfunction, breast tenderness
Size 30 Tablets
Do you need a prescription for it? Yes
Other names this medication is known by Avodart (when used for prostate conditions)
Patient Information Leaflet Dutasteride Patient Information Leaflet

What is Dutasteride?

Dutasteride is a prescription medication that comes in 0.5mg capsules taken once daily. Initially developed for treating enlarged prostate glands, it’s now widely used as an effective treatment for male pattern hair loss.

How Does Dutasteride Work?

Dutasteride blocks an enzyme called 5-alpha reductase inhibitors, which converts testosterone into dihydrotestosterone (DHT). DHT is the hormone responsible for shrinking hair follicles in men with male pattern baldness, leading to thinner hair and eventual hair loss.

By reducing DHT levels in the scalp, dutasteride helps protect your hair follicles from damage. This slows down hair loss and gives existing hair follicles a chance to recover and grow thicker, healthier hair. Unlike some hair loss treatments that only block one type of the enzyme, dutasteride blocks both types, making it particularly effective.

Most men start to see results within 3 to 6 months of consistent use, though it can take up to a year to see the full benefits.

What is Dutasteride Used For?

Dutasteride is used to treat male pattern hair loss (androgenetic alopecia), a common condition that causes hair thinning and baldness in men.

This type of hair loss typically follows a recognisable pattern:

  • Receding hairline at the temples
  • Thinning at the crown (top of the head)
  • Gradual loss of hair density across the scalp
  • Progressive widening of the parting

Dutasteride for hair loss works by addressing the root cause of male pattern baldness – the hormone DHT. It’s particularly effective for men who want to slow down or stop further hair loss and potentially regrow some of their lost hair.

Dutasteride is also used to treat benign prostatic hyperplasia (BPH), which is an enlarged prostate gland. When used for BPH, it helps to shrink the prostate and relieve symptoms like difficulty urinating. However, when prescribed for hair loss, the focus is on its ability to reduce DHT levels in the scalp.

Who Can Use Dutasteride?

Dutasteride is suitable for adult men experiencing male pattern hair loss who want an effective treatment to slow or stop hair thinning. It’s particularly helpful if you’ve noticed your hair loss progressing despite trying other treatments.

However, dutasteride may not be suitable for everyone. You should consult your doctor or pharmacist before using dutasteride if you:

  • Have liver problems or liver disease
  • Have a history of prostate cancer
  • Are planning to donate blood (you must wait 6 months after stopping dutasteride)
  • Have an allergy to dutasteride, finasteride, or any other ingredients in the capsules

Dutasteride is not suitable for:

  • Women – it should never be used by women, especially those who are pregnant or may become pregnant, as it can cause serious congenital disabilities
  • Children and adolescents under 18 years old

Before starting treatment with dutasteride, always inform your doctor or pharmacist about any medications you’re taking and any medical conditions you have.

How to Take Dutasteride Capsules

  1. Take one 0.5 mg Dutasteride capsule once daily, at the same time each day.
  2. Swallow whole with water. Do not crush, chew, or open the capsules, which can irritate your mouth and throat.
  3. You can take dutasteride with or without food.
  4. If you miss a dose, take it as soon as you remember. However, if it’s almost time for your next dose, skip the missed dose and continue with your regular schedule. Don’t take a double dose to make up for a forgotten one.

Continue using dutasteride as prescribed, even after you start seeing results. Hair loss treatment requires ongoing use – if you stop taking dutasteride, you’ll likely lose any hair you’ve regained within 6 to 12 months. It’s important to be patient, as it can take several months before you notice improvements in hair growth or a slowing of hair loss.

Side Effects of Dutasteride

Like all medications, dutasteride can cause side effects, although not everyone experiences them. Most side effects are mild and may improve as your body adjusts to the treatment.

Common Side Effects

  • Decreased sex drive (reduced libido)
  • Erectile dysfunction
  • Decreased semen volume
  • Breast tenderness or enlargement
  • Testicular pain or discomfort

Uncommon Side Effects

  • Mood changes, including depression
  • Dizziness
  • Hair growth or increased body hair
  • Skin rash or itching
  • Swelling of the lips or face

Serious Side Effects

  • Signs of an allergic reaction (swelling of the face, lips, tongue, or throat, difficulty breathing, severe skin rash)
  • Breast lumps or nipple discharge
  • Severe depression or changes in mood

If you experience any serious side effects, stop taking dutasteride and seek immediate medical attention by calling NHS 111 or visiting A&E.

Most mild side effects will settle down as your body adjusts to the treatment. If side effects persist or concern you, contact your doctor or pharmacist for advice.

You can report side effects to the MHRA Yellow Card Scheme to help monitor the medication’s safety.

Dutasteride Ingredients

Active ingredient: Dutasteride 0.5mg

Inactive ingredients: glycerol monocaprylocaprate (Type I) and butylated hydroxy toluene (E321), gelatin, glycerol, titanium dioxide (E171) and iron oxide yellow (E172)

Dutasteride Warnings

  • Do not handle or touch dutasteride capsules if you are a woman who is pregnant or may become pregnant. The active ingredient can be absorbed through the skin and may cause congenital disabilities in male babies.
  • Dutasteride can affect PSA (prostate-specific antigen) blood test results. If you need a PSA test, inform your doctor that you’re taking dutasteride, as it can lower PSA levels and may affect the interpretation of the results.
  • You should not donate blood while taking dutasteride and for at least 6 months after stopping treatment. This is to prevent pregnant women from receiving blood that contains dutasteride.
  • If you’re planning any surgery, tell your surgeon that you’re taking dutasteride, particularly if it involves anaesthesia.
  • Dutasteride capsules contain soya lecithin. If you’re allergic to peanuts or soya, speak to your doctor before taking this medication.
  • Store dutasteride capsules in their original packaging at room temperature, away from moisture and direct sunlight.
  • Keep out of sight and reach of children and women of childbearing age.

Dutasteride 0.5mg Capsules Reviews

Dutasteride FAQs


Dutasteride does shrink the prostate. This is actually its original intended use – it was developed to treat benign prostatic hyperplasia (BPH), or enlarged prostate. By reducing DHT levels, dutasteride helps shrink prostate tissue over time, which can relieve urinary symptoms in men with BPH. When used for hair loss, this effect still happens, but isn’t the primary goal of treatment.

Finasteride and dutasteride have similar safety profiles, working in comparable ways. Both can cause similar side effects, particularly relating to sexual function. Dutasteride blocks both types of the 5-alpha reductase enzyme, while finasteride only blocks one type, which means dutasteride is more potent. Some men may find one medication suits them better than the other.

Dutasteride is not known to lower blood pressure directly. However, if you have concerns about how dutasteride might interact with blood pressure medications or affect your cardiovascular health, speak to your doctor or pharmacist before starting treatment.

Dutasteride and tamsulosin are not the same. They’re completely different medications that work in different ways. Tamsulosin is an alpha-blocker used to relax muscles in the prostate and bladder to improve urine flow, while dutasteride is a 5-alpha reductase inhibitor that reduces DHT levels. Sometimes they’re prescribed together for prostate problems, but for hair loss, only dutasteride is used.

The results from dutasteride are not permanent. If you stop taking the medication, DHT levels will return to normal, and you’ll likely lose any hair you’ve regained within 6 to 12 months. Hair loss treatment with dutasteride requires ongoing use to maintain results. Think of it as an ongoing management strategy rather than a permanent cure.

Dutasteride doesn’t cause cancer. Studies show it reduces the overall risk of prostate cancer by about 23%. While early research suggested a small increase in high-grade prostate cancer detection, more recent long-term studies indicate this was likely due to detection bias rather than the medication itself. If you have concerns about prostate cancer or a family history, discuss this with your doctor before starting treatment.

Dutasteride can help thicken existing hair by protecting hair follicles from DHT damage, allowing them to produce thicker, healthier hair strands. Many men notice that their hair becomes fuller and denser over time.

However, results vary from person to person – some men experience significant thickening, while others mainly see a slowing of hair loss. It typically takes 3 to 6 months to notice changes, with full results visible after about a year.

Weight gain is not a commonly reported side effect of dutasteride. If you experience unexpected weight changes while taking dutasteride, speak to your doctor or pharmacist, as this could be related to other factors.

Constipation is not a common side effect of dutasteride. If you experience persistent constipation or digestive issues while taking this medication, consult your doctor or pharmacist to rule out other causes.

Some men experience a temporary increase in hair shedding during the first few months of treatment with dutasteride. This is known as “shedding” and is actually a sign that the medication is working. It happens because dutasteride pushes hair follicles into a new growth cycle, causing older hairs to fall out to make way for new, healthier hair.

If shedding happens, it typically starts within the first 2 to 3 months and should settle down. Don’t stop taking dutasteride if this happens – continue as prescribed, and you should see improvements after a few months.

Erectile dysfunction is a possible side effect of dutasteride, though not everyone experiences it. Clinical studies show that a small percentage of men taking dutasteride report difficulties with erections. For most men, these side effects are mild and may improve over time as the body adjusts to the medication. If you experience persistent or bothersome sexual side effects, speak to your doctor about your options.

Dutasteride does not typically cause drowsiness or sleepiness. If you feel unusually tired while taking dutasteride, this is not a common side effect, and you should speak to your doctor to investigate other potential causes.

Dutasteride doesn’t work for everyone but is effective for many men with male pattern hair loss. Response rates vary – some men see significant regrowth, while others mainly experience a slowing or stopping of further hair loss.

Dutasteride tends to work best for men who still have active hair follicles in the affected areas. It’s less effective if hair loss is very advanced or follicles have been inactive for many years. Results also depend on consistent, long-term use of the medication.

You can take dutasteride at any time of day – morning or night – whichever is most convenient for you. The most important thing is to take it at the same time each day to maintain consistent levels in your body. Choose a time that fits easily into your daily routine to help you remember to take it.

Women should not take dutasteride for hair loss. Dutasteride can cause serious birth defects in male babies if taken during pregnancy. Women who are pregnant, may become pregnant, or are breastfeeding must never take or even handle dutasteride capsules, as the medication can be absorbed through the skin. Hair loss in women has different causes and requires different treatments – speak to your doctor about appropriate options.

Dutasteride and minoxidil work completely differently, so “better” depends on your needs.

Dutasteride is a tablet that works from the inside by blocking DHT, while minoxidil is a topical treatment applied directly to the scalp that stimulates hair growth.

A lot of men use both together for enhanced results, as they complement each other. Dutasteride tends to be more effective for preventing further hair loss, while minoxidil can be particularly good at stimulating new growth. Your doctor or pharmacist can help you decide which approach is best for you.

If you stop taking dutasteride, DHT levels in your scalp will gradually return to their previous levels. This means hair loss will resume, and you’ll likely lose any hair you regained during treatment within 6 to 12 months of stopping. The hair follicles will once again be exposed to DHT damage. This is why dutasteride is considered a long-term treatment – you need to continue taking it to maintain the benefits.

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Page content authored by Mr Mohammed, last reviewed by Amjad Khan on 14th October 2025.

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