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Propecia 1mg is a prescription hair loss treatment. It can aid the retention of hair on the scalp. The generic version of this medicine is called Finasteride.

Treated.com is here to help you find the hair loss treatment you need, safely and securely. You can buy Propecia online through our private prescription service, and all of our orders are fulfilled by a UK-regulated pharmacy.

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PLEASE NOTE: This treatment is not available through our online pharmacy service. This page is for information only. If you are experiencing any of the symptoms related to the condition(s) this medication treats, we strongly recommend that you see your GP in person.

This content was reviewed by a clinician on

26 April 2022
dr daniel

Dr Daniel Atkinson

(GP Clinical Lead - GMC No. 4624794) 26 April 2022
Product information

Propecia is a prescription medication marketed by MSD, containing the active ingredient finasteride. It can help to significantly slow down hair loss, and in some cases has even been shown to encourage the regrowth of lost hair, in small amounts. Finasteride works by preventing a hormonal conversion in the body (testosterone to dihydrotestosterone) which causes hair loss.

What does Propecia 1mg treat?

Male pattern baldness (also known as androgenic alopecia) most typically begins to affect men in their thirties, but it can affect younger men too. Whereas some men may take over 15 years to lose most of their hair after the process has begun, a smaller number of men may find that they lose their hair very quickly, going almost completely bald within the space of five years.

Hair loss is very common, affecting up to a half of all men by the time they reach 40. But that doesn't make it any less daunting a prospect for some.

While many men choose to embrace hair loss and adopt baldness as part of their look, others might not be as confident to do so. Some men might prefer to hold onto their hair because they feel that being bald doesn't suit them, and seek treatment.

What causes hair loss in men?

The cause of hair loss in male pattern baldness is the conversion of a hormone in the body. When testosterone changes to dihydrotestosterone (DHT), this results in the loss or thinning of hair on the scalp, and/or at the front of the head (hairline). This transition is caused by an enzyme called 5-alpha-reductase.

How does Propecia work to reduce hair loss?

The main ingredient in Propecia is a substance called finasteride. This works by inhibiting the activity of the 5-alpha-reductase enzyme, therefore reducing the rate of conversion of the testosterone hormone into dihydrotestosterone, and reducing hair loss.

In clinical trials, around 90% of men using Propecia found the drug either prevented hair loss or promoted some regrowth when compared to baseline.

Please be aware that this treatment does not permanently reverse the process of hair loss. Men who are genetically predisposed to hair loss will continue to lose their hair if they stop taking the treatment; and the drug can become less effective over time.

How can I buy Propecia tablets online?

Men who haven’t used Propecia before should speak to their GP in person before taking it for the first time. A doctor may need to perform a physical examination of the affected area to ensure that the treatment is suitable.

If you have used this treatment before, you can buy Propecia online from our UK pharmacy by completing a remote consultation. Fill in our simple medical questionnaire, and your order will be reviewed by one of our GMC-registered doctors. Following approval, your treatment will be dispensed at our pharmacy, before being collected and shipped by tracked courier.

What does the active ingredient in Propecia do?

Finasteride is a 5-Alpha-Reductase inhibitor. This means that it reduces the activity of an enzyme, 5-A-R. It is this enzyme which facilitates the conversion of testosterone into dihydrotestosterone (DHT). This conversion is a natural phenomenon in men. Hair loss is caused by raised levels of DHT, and typically affects most men by the time they are into their 30s. By lowering the presence of DHT, the medication works to reduce the thinning and shedding of hair.

Page last reviewed:  26/04/2022


Make sure you follow the directions given by your prescriber, and read the patient information leaflet before use.

  • It is not necessary to take Propecia with food.
  • Do not exceed the stated dose. This is most typically one tablet per day. If you take more than you should, seek immediate medical advice.
  • It may take between 3 and 6 months for the effects of the drug to become noticeable.
  • If you miss a dose, under no circumstances should you double up on the next dose. Simply skip the dose you have missed and take the next one as normal.
  • If you are unsure about any aspect of your medicine, consult your doctor.
  • Men who stop taking Propecia may lose any hair they have kept or gained as a result of taking it. This typically occurs within 9-12 months of stopping.

More detailed directions can be found in the leaflet provided.

Page last reviewed:  26/04/2022
Please read the patient information leaflet for this medicine fully before use:

Finasteride 1mg

Propecia 1mg

Side effects & Warnings

Side effects

Side effects

If you notice any signs of an allergic reaction when using this medication, or notice any other side effects that become serious, seek medical attention right away.

Uncommon (more than 1 in 1,000):

Decreased sexual desire (libido), depression, erectile dysfunction (impotence), ejaculatory problems.

Inform your doctor if you notice any of the side effects listed above.

Other side effects (the frequency of these is unknown):

Allergic reactions, breast tenderness, pain, enlargement and discharge, breast cancer, infertility, testicular pain, abnormalities in test results, hypersensitive skin reactions, depression and suicidal thoughts.

Contact your doctor immediately if you experience any signs of an allergic reaction, or if you have any side effects which become serious.

If you develop any symptoms of depression or suicidal thoughts, you should stop using Propecia and tell your doctor immediately.

Conditions to look out for

This medication is not suitable for women, or for men who are allergic to any of the containing ingredients, or suffer from lactose intolerance, liver problems or glucose and galactose absorption deficiencies.

The information provided here is not comprehensive. If you are unsure about taking this medicine, speak to your doctor.

What other medications can't I take with Propecia?

You should not use Propecia if you are currently using finasteride or a similar medication for the treatment of BPH. Inform your doctor of any other medications you are currently using during consultation.

Pregnancy and breastfeeding

This medication should not be taken by women.

Broken or crushed Propecia tablets should not be handled by women who are pregnant or planning to become pregnant. If you are pregnant and come into contact with broken or crushed Propecia pills, speak to your doctor immediately.

Driving and using machinery

Propecia is not likely to inhibit your capacity to drive or use machines.

Lactose intolerance

This medicine contains lactose. Let your prescriber know if you have any intolerances to sugar.

Page last reviewed:  26/04/2022
Please read the patient information leaflet for this medicine fully before use:

Finasteride 1mg

Propecia 1mg


Can I still drink alcohol?

Propecia is not thought to interact with alcohol.

Will I still be able to drive?

Propecia should not interfere with your ability to drive or operate machinery. If the medicine causes any side effects which may reduce your judgment and ability to drive, then you should refrain from doing so and contact your GP.

Is Propecia only for men?

Yes. Propecia is not effective at treating female pattern baldness, and may cause harm to those women who come into contact with it while pregnant.

How should I store it?

In a dry, safe place, below 30 degrees Celsius and out of the reach of children. For ease of use, do not decant the treatment into a separate container. Keep it in it's original marked container.

Am I allergic to anything in the medicine?

Propecia tablets contain the ingredients listed below. If you are allergic or intolerant to any of these, you should not use it.

Docusate sodium, finasteride, lactose, talc, hydroxypropylcellulose E463, hypromellose E464, magnesium stearate E572, microcrystalline cellulose E460, pregelatinised maize starch, red iron oxide E172, sodium starch glycollate, yellow iron oxide E172 and titanium dioxide.

How can I buy Propecia online?

Take our questionnaire to begin your confidential consultation for Propecia. Once complete, your order will be assessed by one of our registered prescribers. Medicines are dispensed at our pharmacy based in the UK, before being delivered by secure next-day parcel.

Page last reviewed:  26/04/2022
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