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Finasteride

Finasteride

Finasteride is a prescription medicine mainly used to treat male pattern hair loss and an enlarged prostate. For hair loss, it helps slow thinning on the scalp and supports hair regrowth over time. For prostate issues, it reduces prostate size and improves urine flow. Finasteride works by lowering a hormone called DHT, which is linked to hair loss and prostate growth. Results build slowly and need regular use.
Category: Hair Loss
Medically Reviewed by – Millie Chapman, NP
Last Updated on 8 July 2026

What is Finasteride used for?

Finasteride is a prescription medicine mainly used to treat male pattern hair loss and an enlarged prostate. For hair loss, it helps slow thinning on the scalp and supports hair regrowth over time. For prostate issues, it reduces prostate size and improves urine flow. Finasteride works by lowering a hormone called DHT, which is linked to hair loss and prostate growth. Results build slowly and need regular use.

How to take Finasteride?

Finasteride is taken once daily by mouth, with or without food. Take it at the same time each day to keep steady levels in your body. Swallow the tablet whole. Do not crush or break it. For hair loss, the usual dose is lower than for prostate treatment. Follow your doctor’s advice exactly. Skipping doses may reduce results. Long-term use is often needed to maintain benefits.

Side effects

Most people tolerate Finasteride well, but side effects can happen. These are usually mild and may improve with time.

Possible side effects include:

  • Lower sex drive

  • Trouble getting or keeping an erection

  • Reduced semen volume

  • Breast tenderness or swelling

Rare effects include mood changes. Contact a doctor if symptoms persist or worsen.

Drug interactions

Finasteride does not commonly interact with many medicines. However, always tell your doctor about all medicines you take, including supplements and herbal products. Caution is advised when combining Finasteride with hormone-related treatments. Do not start or stop other medicines without medical advice. Sharing your full medication list helps avoid unwanted effects and ensures Finasteride works safely and effectively.

Warnings

Finasteride is not for use by women or children. Pregnant women should not touch broken tablets, as this may harm an unborn baby. Tell your doctor if you have liver problems or breast changes. Finasteride can affect PSA test results used for prostate screening. Regular medical reviews are advised during long-term use. Stop the medicine and seek help if serious side effects appear.

Storage

Store Finasteride at room temperature, away from heat and moisture. Keep it in its original packaging and out of reach of children. Do not use tablets past the expiry date. Avoid storing in bathrooms due to humidity. Dispose of unused medicine safely, following local guidance. Proper storage helps maintain the medicine’s strength and safety.

FAQ's

What does Finasteride do for hair?

Finasteride helps slow hair loss and supports regrowth by blocking DHT, the hormone that shrinks hair follicles. With regular use, it can reduce shedding and help keep existing hair. Results usually appear after three to six months. Stopping the medicine may cause hair loss to return.

How effective is Finasteride?

Finasteride is clinically proven to reduce hair loss in many men. Most users see slower thinning, and some notice regrowth with continued use. It works best when started early. Results vary by person and require daily use. It does not cure hair loss but helps manage it long term.

Can women take Finasteride?

Finasteride is not approved for women. It can cause serious harm if taken during pregnancy. Women who are pregnant or may become pregnant should avoid handling broken tablets. In rare cases, doctors may prescribe it off-label, but this requires strict medical supervision and is uncommon.

Do you have to take Finasteride after hair transplant?

Many doctors recommend Finasteride after a hair transplant. It helps protect existing hair and reduces further hair loss. While transplanted hair is usually permanent, untreated hair around it may thin over time. Finasteride supports long-term results when used consistently after the procedure.

How long does Finasteride stay in your system?

Finasteride leaves the body within a few days, but its effects on hormones last longer. DHT levels may remain lowered for weeks after stopping. Hair loss may resume within months if the medicine is discontinued. Regular use is needed to maintain benefits.

Does Finasteride affect fertility?

Finasteride may slightly reduce semen volume in some men, but this is usually reversible. Most studies show no long-term effect on male fertility. If you are planning a pregnancy and have concerns, speak with your doctor before continuing treatment.

Can I buy Finasteride online over the counter or without prescription?

Finasteride is not available over the counter in the UK—it requires a prescription. However, you can buy it online from internationaldrugmart.com after an online consultation. Their licensed healthcare providers can assess your condition and, if appropriate, issue a prescription. This makes it easy and safe to get your medication delivered right to your doorstep without visiting a clinic.

Where can I buy Finasteride online at low price in UK?

You can buy Finasteride online at low price in UK from InternationalDrugMart. This trusted online pharmacy offers affordable rates, secure checkout, and reliable global shipping. Shop conveniently from home and get your treatment delivered to your doorstep. Save more on quality healthcare with InternationalDrugMart today.

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