Finasteride Cost UK 2026: Where to Get the Cheapest Prescription

Finasteride is the most prescribed hair loss treatment in the UK. It works by blocking DHT, the hormone that causes male pattern baldness. But prices vary wildly depending on where you get it — from free on the NHS to over £35/month privately.

Here's what finasteride actually costs in 2026 and where to find the cheapest option.

NHS vs private: what you'll pay

There are two routes to getting finasteride in the UK: through your GP on the NHS, or through a private online provider.

| Route | Cost | Notes | |---|---|---| | NHS prescription | £9.90 per item | Standard charge per dispensing | | NHS prepayment certificate | £31.25 per 3 months | Unlimited prescriptions — best if you take other meds too | | NHS (exempt) | Free | If you qualify for free prescriptions | | Private online pharmacy | £9–35/month | Varies by provider and quantity |

Private provider price comparison

If you prefer the convenience of a private online service — no GP appointment, delivered to your door — here's what the main providers charge:

| Provider | Monthly cost | Includes consultation | Subscription | |---|---|---|---| | Pharmacy2U | From £9/month | Yes | Monthly | | Sons | From £12/month | Yes | Monthly or quarterly | | Boots Online | From £14/month | Yes | Monthly | | Numan | From £16/month | Yes | Monthly | | Manual | From £18/month | Yes | Monthly |

Prices are for 1mg finasteride tablets (28-day supply). All providers listed are registered with the GPhC or CQC.

Generic vs branded finasteride

Finasteride is available as a generic (unbranded) tablet or under the brand name Propecia.

| Version | Typical monthly cost | Difference | |---|---|---| | Generic finasteride 1mg | £9–18/month | Identical active ingredient | | Propecia (branded) | £30–50/month | Same drug, higher price |

There is no clinical difference between generic finasteride and Propecia. Both contain the same active ingredient at the same dose. The patent expired years ago, so there is no reason to pay more for the branded version unless you specifically prefer it.

How does finasteride work?

Finasteride blocks the enzyme 5-alpha reductase, which converts testosterone into dihydrotestosterone (DHT). DHT is the primary cause of male pattern hair loss — it shrinks hair follicles over time until they stop producing visible hair.

By reducing DHT levels by roughly 70%, finasteride slows hair loss in most men and can promote regrowth in some.

How long does it take to work?

Finasteride is not a quick fix. Most men need to take it consistently for 3 to 6 months before seeing any visible improvement.

| Timeline | What to expect | |---|---| | 1–3 months | No visible change; some men experience initial shedding (normal) | | 3–6 months | Reduced hair fall; early signs of thickening | | 6–12 months | Noticeable improvement in density and coverage | | 12+ months | Full results; continued use needed to maintain them |

If you stop taking finasteride, the effects reverse within 6–12 months.

Side effects

Finasteride is well tolerated by the vast majority of men. However, a small percentage experience side effects:

• Sexual side effects (1–2% of users): reduced libido, erectile difficulty, or decreased ejaculate volume. These are reversible on stopping the medication in almost all cases.
• Breast tenderness (rare): reported in under 1% of users.
• Mood changes (rare): some reports of low mood, though large-scale studies have not confirmed a causal link.

Combining finasteride with minoxidil

Many dermatologists recommend using finasteride alongside minoxidil (Regaine) for the best results. They work through different mechanisms:

• Finasteride blocks DHT production (tackles the cause)
• Minoxidil stimulates blood flow to follicles (promotes regrowth)

Used together, the combination is more effective than either treatment alone. Minoxidil is available over the counter from around £10–25/month depending on brand and formulation (foam vs liquid).

Several online providers now offer combination plans that bundle both treatments at a discount.

Who should take finasteride?

Finasteride is suitable for men aged 18+ with male pattern hair loss (androgenetic alopecia). It is not prescribed for:

• Women (it can cause birth defects and is contraindicated in pregnancy)
• Hair loss caused by stress, illness, or other non-hormonal factors
• Complete baldness (it works best when started early, Norwood 2–4)

The earlier you start, the more effective it is. Finasteride is better at maintaining existing hair than regrowing hair that has already been lost.

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