Description
Dutasteride 0.5mg Capsules (Generic)
Prescription dutasteride 0.5mg capsules for male pattern hair loss, at generic pricing. From £20 for a 30-capsule pack (one month) down to under £12 per month at the largest value pack. Same active ingredient as GSK's Avodart brand, dispensed by a GPhC registered UK partner pharmacy.
How dutasteride works for hair loss
Dutasteride is a dual 5-alpha reductase inhibitor. It blocks both the Type I and Type II enzymes that convert testosterone into dihydrotestosterone (DHT), the hormone responsible for miniaturising hair follicles in men with male pattern hair loss. At the standard 0.5mg daily dose, dutasteride reduces serum DHT by 90 to 98%, compared with roughly 70% for finasteride.
Type I 5-alpha reductase is expressed in scalp skin and sebaceous glands. Finasteride leaves this pathway largely active, meaning a significant source of scalp DHT remains during treatment. Dutasteride closes both doors, which is why it is often reached for when finasteride has plateaued or the loss pattern is aggressive.
What to expect
2 to 3 months: reduced shedding is often the first sign
4 to 6 months: visible thickening and some regrowth on the crown and mid-scalp
12 months: full effect judged. Results maintained by continued daily use
On stopping: any hair gained is lost over 6 to 12 months as DHT returns to normal. Dutasteride has a long half-life (roughly 5 weeks) so DHT levels take longer to recover than after finasteride
Dosing
One 0.5mg capsule daily, at any time of day, with or without food. Consistency matters more than timing. Do not open, chew or crush the capsule. If you miss a dose, take it as soon as you remember on the same day; do not double up the next day.
Choose your dutasteride 0.5mg pack size
Dutasteride 0.5mg is available in four pack sizes. Larger packs work out at a lower cost per capsule and mean fewer reorders across the year.
30 capsules (1 month at £20)
The starter pack. 30 capsules at 50p per capsule. Suitable for anyone new to dutasteride who wants to try one month before committing to a longer course, or who prefers to reorder monthly.
90 capsules (3 months at £50)
The three month value pack. 90 capsules at 44p per capsule. A middle ground option: reduces the per capsule cost without committing to a full year.
180 capsules (6 months at £80)
The six month pack. 180 capsules at 38p per capsule. Popular with customers who have established response and want to reduce ordering frequency.
360 capsules (12 months at £140)
The 12 month value pack. 360 capsules at 36p per capsule, the lowest per capsule price we offer. Best value for anyone confident on dutasteride for the long term.
All pack sizes contain the same 0.5mg dutasteride capsules, dispensed by a GPhC registered UK partner pharmacy.
Side effects
Most men take dutasteride 0.5mg without issue. Sexual side effects are the most reported effects, though the reported incidence in trials is not dramatically different from placebo. Dutasteride has a much longer half-life than finasteride (weeks versus hours), so any side effect takes longer to resolve after stopping.
Uncommon (roughly 1 in 100)
Reduced libido
Erectile dysfunction
Changes to ejaculation volume
Rare (less than 1 in 1,000)
Breast tenderness or enlargement
Mood changes (incidence unclear, still reported)
Persistent sexual effects after stopping treatment
Very rare (less than 1 in 10,000)
Reduced semen quality or male infertility (worth discussing with your prescriber if you are actively trying to conceive)
Testicular pain or discomfort
Changes in liver function
When to seek urgent medical advice
Signs of allergic reaction: facial or lip swelling, difficulty breathing, rash
Significant mood change or thoughts of self-harm
Unusual breast lumps or nipple discharge
Who should not take dutasteride
Women, in any circumstance
Anyone under 18
Anyone with a known allergy to dutasteride or other 5-alpha reductase inhibitors
Anyone with severe liver disease should be reviewed carefully by a prescriber
Pregnancy and fertility
Dutasteride can affect a male foetus. The capsules are soft-gelatin coated, so simply taking dutasteride does not expose a pregnant partner. The risk arises only if a pregnant woman handles a leaking or damaged capsule. Handle the capsules with dry hands and do not split them.
Dutasteride can also be absorbed through skin, so blood donation from men on dutasteride is not accepted for at least 6 months after stopping. If you and your partner are actively trying to conceive, discuss with your prescriber, as dutasteride can reduce semen parameters in some men.
Warnings and precautions
PSA lowering: Dutasteride can artificially lower Prostate Specific Antigen (PSA) blood test results by around 50%. If you have a PSA test in future for prostate cancer screening, tell your GP you are taking dutasteride so the reading can be doubled for accurate interpretation.
Post-finasteride syndrome: If you have previously stopped finasteride due to persistent sexual, mood or physical effects, disclose this on the questionnaire so your prescriber can review carefully before starting dutasteride.
Concurrent DHT-blocking treatment: Do not start oral dutasteride alongside oral finasteride, topical finasteride or topical dutasteride without prescriber guidance. Combining increases systemic exposure and side-effect risk.
Longer half-life than finasteride: Effects and any side effects take longer to resolve on stopping, because dutasteride has a much longer half-life (weeks versus hours).
Blood donation: Not eligible to donate blood while taking dutasteride or for 6 months after stopping.
Dutasteride vs finasteride
Finasteride 1mg is the licensed first-line UK treatment for male pattern hair loss. If it produces good results with no side effects, most men stay on it long term. Dutasteride is often chosen when:
Finasteride has plateaued or produced only modest results
The pattern of loss is aggressive and needs stronger DHT suppression
The man specifically wants the strongest available medical option
Dutasteride is prescribed off-label in the UK for hair loss, which is standard clinical practice supported by extensive evidence. Our online questionnaire is reviewed by a UK GPhC-registered prescriber who will give you a straight answer about which option suits your situation.
Generic dutasteride and Avodart
Generic dutasteride 0.5mg contains the identical active ingredient at the same strength as GSK's Avodart brand, and is bioequivalent. Both are manufactured to MHRA pharmaceutical standards and produce the same clinical results. The generic is manufactured by producers other than GSK, at a lower price point.
Some men specifically prefer the branded original: GSK developed dutasteride, and Avodart is the exact medication used in the original clinical trials. If you want the branded version, see our Avodart 0.5mg pack.
Supply note
We supply generic dutasteride 0.5mg from a range of MHRA-approved UK or EU manufacturers. The active ingredient and strength are identical across manufacturers.
Combining oral dutasteride with topical treatments
Oral dutasteride blocks DHT at source, which addresses the hormonal driver of pattern hair loss. Many men add a topical treatment on top to hit the growth stimulator side of hair loss as well.
The most common combinations for men in the UK:
Oral dutasteride plus topical minoxidil is the classic dual mechanism approach. Dutasteride reduces DHT systemically, minoxidil stimulates growth locally. See our topical minoxidil in TrichoSol® base for a low irritation option.
Oral dutasteride plus a custom topical compound. If you want minoxidil, tretinoin and other actives compounded into a single 100ml bottle, our Custom Topical Solution lets your prescriber build the exact formula. Note: since you already take oral dutasteride, keep the topical DHT free and use it for minoxidil, tretinoin, melatonin, spironolactone or other supporting actives. Never combine oral dutasteride with topical finasteride or topical dutasteride.
Prefer a topical only approach? DUTASOL delivers the same dutasteride active applied to the scalp rather than swallowed, in a 100ml TrichoSol® bottle at 3 months of daily use.
Prescription included
Complete the short online health questionnaire at checkout. A UK prescriber reviews your answers, most approvals are the same day. Your capsules are dispensed by a GPhC registered UK partner pharmacy and delivered free.
References
NHS. Hair loss. Available at nhs.uk.
NICE CKS. Alopecia (androgenetic). Available at cks.nice.org.uk.
Frequently asked questions
What is dutasteride 0.5mg?+
Dutasteride 0.5mg is an oral prescription capsule for male pattern hair loss. It reduces DHT by 90 to 98% by blocking both Type I and Type II 5-alpha reductase enzymes, more potent than finasteride which blocks only Type II.
How does dutasteride compare to finasteride?+
Dutasteride is a stronger DHT blocker: 90 to 98% suppression vs finasteride 70%. In trials this produces modestly better hair count and density. Finasteride 1mg is the licensed UK first-line for hair loss; dutasteride is used when finasteride has plateaued or the pattern is aggressive.
Is dutasteride approved for hair loss in the UK?+
Dutasteride is licensed in the UK for benign prostatic hyperplasia (BPH), not specifically for hair loss. Prescribing it off-label for hair loss is legal, common in UK dermatology practice and supported by extensive evidence. Our questionnaire is reviewed by a UK GPhC-registered prescriber.
Can I switch from finasteride to dutasteride?+
Yes, this is a common switch when finasteride has plateaued. Discuss with your prescriber. There is no need to leave a gap between stopping finasteride and starting dutasteride, though some clinicians prefer a short washout.
What is the best pack size for value?+
The 360-capsule value pack brings the per-month cost down significantly compared with monthly ordering. Most starters begin with the 30-capsule (1-month) pack to confirm tolerance before committing to a longer supply.
What are the common side effects?+
Most men take dutasteride 0.5mg without issue. Uncommon effects (roughly 1 in 100) include reduced libido, erectile dysfunction, changes to ejaculation. Rare effects include breast tenderness, mood changes, persistent sexual effects after stopping. See the full side effects section for the complete list and urgent-advice signs.
Will dutasteride affect my PSA test?+
Yes. Dutasteride artificially lowers Prostate Specific Antigen (PSA) blood test results by around 50%. If you have a PSA test in future for prostate cancer screening, tell your GP you are taking dutasteride so the reading can be doubled for accurate interpretation.
What is the difference between generic dutasteride and Avodart?+
They contain the identical active ingredient at the same strength and are bioequivalent. Generic dutasteride is manufactured by MHRA-approved producers other than GSK; Avodart is the GSK brand. Same clinical results, generic typically costs less.
Is dutasteride available on the NHS?+
Not for hair loss. Dutasteride for male pattern hair loss is considered cosmetic by the NHS and is prescribed only through private routes in the UK.
Can I return this item?+
Prescription and custom-compounded medicines cannot be returned once dispensed under UK pharmacy regulations. Non-prescription items may be returned within 14 days if unused and in their original packaging. See our returns policy at hairrepairclinic.co.uk/returns-policy for full details.
How much does dutasteride 0.5mg cost in the UK?+
Our dutasteride 0.5mg starts from £20 for a 30-capsule 1-month pack, down to £140 for a 360-capsule 12-month pack (36p per capsule, the lowest per-capsule price we offer). Free UK prescriber review and free UK delivery are included in every order.
How long can I take dutasteride?+
Dutasteride is intended for continuous daily use for as long as you want to maintain results. The benefits (reduced shedding, thickening, regrowth) are held as long as you keep taking it. If you stop, hair gained is gradually lost over 6 to 12 months as DHT returns to normal. Continuous use over multiple years is considered safe in men without contraindications, but your prescriber will review at reorder point to confirm continued suitability.
Do I need blood tests while taking dutasteride?+
For pattern hair loss use in a healthy adult male, routine blood tests are not required. Two clinical points to remember: (1) if you are due a PSA test at any point, tell your GP you are on dutasteride so they can double the reading (dutasteride lowers PSA by around 50%), and (2) tell your GP about the medication at any other medical review. Your online prescriber will screen for any factors that would require blood monitoring.
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