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Ubayd Ali

Authored by

Ubayd Ali

Superintendent Pharmacist

Registration Number: 2219322

NHS Pharmacist and founding member of HEBA, with years of experience in healthcare across innovative organisations.
Sufyan Tahir

Reviewed by

Sufyan Tahir

Clinical Governance Lead

Registration Number: 2221275

Review Date 2 May 2026
Next Review 2 May 2028
Published on 2 May 2026
Last Update 2 May 2026

What is Finasteride?

Finasteride is one of the most clinically established and widely prescribed oral treatments for male pattern hair loss available today. It has been extensively studied over several decades and holds a strong evidence base supporting its effectiveness in slowing, halting, and in many cases reversing the progression of androgenetic alopecia — the most common form of hair loss in men.

Finasteride 1mg tablets are specifically formulated and licensed for the treatment of male pattern baldness in adult men. They are taken once daily and work by targeting the hormonal root cause of hair loss rather than simply stimulating the follicle directly — making them a fundamentally different and complementary approach to topical or oral Minoxidil.

At HEBA Online Pharmacy, Finasteride 1mg tablets are available following a thorough and confidential online consultation with one of our qualified prescribers, who will assess your suitability and ensure the treatment is appropriate for your individual circumstances.

Understanding Male Pattern Hair Loss

Before exploring how Finasteride works, it is helpful to understand the underlying mechanism driving male pattern baldness. Androgenetic alopecia is a genetically determined condition in which hair follicles on the scalp are sensitive to the effects of a hormone called dihydrotestosterone — more commonly known as DHT.

DHT is produced when an enzyme called 5-alpha reductase converts testosterone into this more potent androgenic hormone. In men with a genetic predisposition to male pattern baldness, DHT binds to receptors within hair follicles and triggers a process known as miniaturisation — gradually causing follicles to shrink, producing progressively thinner and shorter hairs over time until the follicle eventually becomes dormant and ceases to produce hair altogether.

This process typically begins at the temples and crown of the head and follows a predictable pattern of progression — which is why the condition is referred to as male pattern baldness.

How Does Finasteride Work?

Finasteride works by selectively inhibiting the action of type II 5-alpha reductase — the enzyme responsible for converting testosterone into DHT in the scalp and other tissues. By blocking this enzyme, Finasteride significantly reduces circulating DHT levels — typically by approximately 60 to 70% — dramatically reducing the concentration of this hormone reaching the hair follicles.

With DHT no longer accumulating around the follicle in sufficient quantities to trigger miniaturisation, the follicle's natural growth cycle is preserved. Existing follicles that have been miniaturised may gradually recover and resume producing thicker, healthier hair, while follicles that are still functioning normally are protected from further DHT-mediated damage.

Finasteride does not eliminate DHT entirely — it reduces it to levels that are insufficient to sustain the miniaturisation process in most men, allowing the hair growth cycle to normalise progressively over time.

What Results Can I Expect from Finasteride?

The clinical evidence supporting Finasteride 1mg for male pattern hair loss is extensive and well established. Key findings from long-term clinical trials include:

  • In clinical studies conducted over five years, approximately 90% of men taking Finasteride 1mg either maintained their existing hair or experienced measurable regrowth compared to their baseline at the start of treatment
  • Finasteride is most effective at preventing further hair loss — halting or significantly slowing progression in the vast majority of men who take it consistently
  • Visible hair regrowth is observed in a meaningful proportion of men, particularly in the crown area, which tends to respond better than the frontal hairline
  • Results are progressive — improvements continue to develop over the first one to two years of treatment before reaching a plateau
  • The frontal hairline and temples tend to show less dramatic regrowth than the crown, though stabilisation of recession is commonly observed

It is important to note that individual results vary and depend on factors including the extent of hair loss at the time treatment is commenced, age, genetic factors, and adherence to the daily treatment regimen.

When Will I See Results?

Finasteride works gradually and requires patience and consistent daily use:

  • Months 1 to 3 — Finasteride begins reducing DHT levels from the first dose, though visible changes to hair density are not yet apparent during this early period. Some men may notice a slight increase in hair shedding during the first few weeks as follicles transition between growth phases — this is temporary and should not cause concern
  • Months 3 to 6 — a gradual reduction in the rate of hair loss is typically the first noticeable change. Some early signs of improved hair density may begin to emerge
  • Months 6 to 12 — more meaningful improvements in hair density, thickness, and coverage become apparent for many men during this period
  • 12 months and beyond — continued improvement is possible with ongoing treatment, with maximum benefits typically observed at around the 24-month mark

How to Take Finasteride 1mg Tablets

  • Dosage — take one 1mg tablet once daily as directed by your Heba Online Pharmacy prescriber
  • Timing — take your tablet at the same time each day to maintain consistent DHT suppression. There is no strict requirement regarding the time of day
  • Administration — swallow the tablet whole with a glass of water. It can be taken with or without food
  • Consistency is essential — Finasteride must be taken every single day without interruption to maintain its DHT-suppressing effect. Missing doses will allow DHT levels to recover and may reduce the effectiveness of treatment
  • Long-term commitment — Finasteride is a long-term treatment. Discontinuing the medication will result in DHT levels returning to their previous baseline, and hair loss will resume within six to twelve months of stopping

Possible Side Effects

As with all prescription medications, Finasteride 1mg may cause side effects in some individuals. The most commonly reported include:

  • Decreased libido
  • Erectile dysfunction
  • Reduced ejaculate volume
  • Breast tenderness or enlargement (gynaecomastia) — rare at the 1mg dose
  • Skin rash or itching — uncommon
  • Depression or mood changes — reported by some users; contact our clinical team if you experience persistent changes in mood
  • If you experience any symptoms of a serious allergic reaction — including swelling of the lips, face, or throat, or difficulty breathing — stop taking Finasteride immediately and seek urgent medical attention.

Who Should Not Take Finasteride 1mg?

Finasteride 1mg tablets are exclusively indicated for adult men and are not appropriate for everyone. Please inform your HEBA Online Pharmacy prescriber if any of the following apply:

  • Known allergy to Finasteride or any of the excipients in the formulation
  • Liver disease — Finasteride is metabolised by the liver, and impaired liver function may affect how the medication is processed
  • History of prostate cancer — while Finasteride is sometimes used in prostate management, this requires specialist assessment and is outside the scope of hair loss treatment
  • Urinary tract abnormalities — certain urological conditions may be relevant to Finasteride prescribing
  • Age under 18 — Finasteride is not indicated for use in adolescents

Finasteride and Women

Finasteride 1mg is not licensed for use in women and is specifically contraindicated in women who are pregnant or who may become pregnant. Finasteride can cause abnormalities in the development of the external genitalia of a male foetus. Women should never handle crushed or broken Finasteride tablets, as the active ingredient can be absorbed through the skin. Intact tablets with an intact coating are considered safe to handle.

Important Safety Information

Finasteride and Sexual Side Effects

The most widely discussed potential side effects of Finasteride relate to sexual function. A small proportion of men taking Finasteride 1mg may experience:

  • Reduced libido
  • Erectile dysfunction
  • Decreased ejaculate volume
  • These effects are reported in a minority of users and are generally reversible upon discontinuation of treatment in most cases. The incidence of sexual side effects at the 1mg dose used for hair loss is lower than at the 5mg dose used for benign prostatic hyperplasia. If you experience any of these effects, contact our clinical team at Heba Online Pharmacy to discuss your options.

Post-Finasteride Syndrome

A small number of men have reported persistent sexual, neurological, or psychological symptoms following discontinuation of Finasteride. This collection of symptoms is sometimes referred to as post-finasteride syndrome. While the existence and causation of this syndrome remains a subject of ongoing clinical debate, it is important to be aware of it and to discuss any concerns with your prescriber before commencing treatment.

PSA and Prostate Cancer Screening

Finasteride reduces levels of prostate-specific antigen (PSA) — a protein used as a marker in prostate cancer screening — by approximately 50%. If you undergo PSA testing while taking Finasteride, it is essential to inform the clinician conducting the test that you are taking this medication, as the result will need to be interpreted accordingly to avoid a falsely reassuring reading.

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Frequently asked questions

  • What is Finasteride 1mg used for?

    Finasteride 1mg is a prescription oral tablet specifically licensed for the treatment of male pattern hair loss — also known as androgenetic alopecia — in adult men. It works by reducing levels of DHT, the hormone responsible for the follicular miniaturisation that drives male pattern baldness, thereby slowing or halting hair loss and in many cases promoting measurable regrowth.

  • Is Finasteride the same as Propecia?

    Yes. Propecia is the original branded version of Finasteride 1mg, manufactured by MSD. Finasteride 1mg tablets are the generic equivalent, containing the same active ingredient at the same dose and meeting the same regulatory standards for quality and efficacy. Generic Finasteride offers the same clinical benefits as Propecia at a more accessible price point.

  • How is Finasteride different from Minoxidil?

    Finasteride and Minoxidil work through entirely different mechanisms. Finasteride addresses the hormonal root cause of male pattern baldness by reducing DHT levels, while Minoxidil works by improving blood flow to follicles and extending the active growth phase. Because they complement each other, they are frequently prescribed together for enhanced results.

  • Do I need a prescription for Finasteride?

    Yes. Finasteride is a prescription-only medication in the UK and cannot be legally dispensed without a valid clinical assessment. At Heba Online Pharmacy, you can complete a confidential online consultation with one of our qualified prescribers, who will assess your suitability and issue a prescription if appropriate.

  • How effective is Finasteride for hair loss?

    Finasteride has one of the strongest evidence bases of any hair loss treatment currently available. Long-term clinical studies have demonstrated that approximately 90% of men taking Finasteride 1mg either maintained their existing hair density or experienced measurable regrowth after five years of consistent use. It is most effective at preventing further hair loss, with regrowth most commonly observed at the crown.

  • Will Finasteride work for a receding hairline?

    Finasteride is generally more effective at preserving hair at the crown than at reversing recession at the frontal hairline. However, it can help to stabilise and slow the progression of a receding hairline in many men, preventing further recession even if regrowth at the temples is less pronounced. Starting treatment earlier in the hair loss process generally yields better outcomes in all areas.

  • How long do I need to take Finasteride before I see results?

    Most men begin to notice a reduction in hair shedding and early improvements in hair density between three and six months of consistent daily use. More significant improvements in hair thickness and coverage typically become apparent between six and twelve months, with continued improvement possible up to the 24-month mark. Patience and consistency are essential — it is important not to judge the effectiveness of the treatment before at least six to twelve months of continuous use.

  • Can Finasteride reverse hair loss completely?

    Finasteride is most effective at halting the progression of hair loss and stimulating partial regrowth in areas where follicles are still present. It is unlikely to achieve complete restoration of hair in areas that have been significantly affected for many years, as follicles that have been dormant for extended periods may be beyond recovery. However, for men who begin treatment at an early stage of hair loss, the results can be highly significant in terms of both preservation and regrowth.

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