Finasteride for male pattern baldness
Propecia
Revisione paritaria di Sid DajaniUltimo aggiornamento di Michael Stewart, MRPharmSUltimo aggiornamento 5 May 2025
Rispetta le linee guida editoriali
- ScaricaScarica
- Condividi
- Language
- Discussione
Finasteride is for adult men only - it must fare affidamento be taken by anyone aged under 18 years, or by women.
The dose is one (1 mg) tablet a day.
Side-effects are uncommon, but may include a loss of sex drive and a reduced ability to get an erection.
In questo articolo:
About finasteride for male pattern baldness
Tipo di medicinale | 5-alpha reductase inhibitor |
Utilizzato per | Male pattern hair loss |
Chiamato anche | Propecia® |
Disponibile come | Compresse |
Calvizie maschile is the common type of hair loss that develops in many men at some stage. The condition is sometimes called androgenetic alopecia. It is caused by a combination of hereditary (genetic) and hormonal factors.
Hair is made in hair follicles. A hair normally grows from each hair follicle for about three years. It is then shed and a new hair grows from the follicle. As balding develops, affected hair follicles gradually become smaller than normal. Each new hair that grows is thinner and shed more quickly than before. This eventually leads to a much smaller hair follicle and a thin hair that does not grow out to the skin surface.
Male hormones are involved in causing these changes. Hair follicles convert testosterone (the main male hormone) into another hormone called dihydrotestosterone. Affected hair follicles become more sensitive to dihydrotestosterone and this causes the hair follicles to shrink.
For some men, this normal ageing process can be distressing, particularly if it is excessive or occurs early in life. Treatment with finasteride can help prevent further hair loss. It works by stopping the conversion of testosterone to dihydrotestosterone.
Finasteride is only available on a prescription from a doctor, but it is not available on the NHS. This means you will be asked to pay the full price of the tablets when you receive your supply.
Before taking finasteride
Torna ai contenutiSome medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking finasteride it is important that your doctor knows:
Se hai mai avuto una reazione allergica a un medicinale.
If you are taking any other medicines. This includes any medicines which are available to buy without a prescription, as well as herbal and complementary medicines.
Continua a leggere sotto
How to take finasteride
Torna ai contenutiBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about finasteride and will provide you with a full list of the side-effects which you may experience from taking it.
Take one (1 mg) tablet each day, exactly as your doctor tells you to. Try to take your doses at the same time of day, as this will help you to remember to take finasteride regularly.
Swallow the tablet whole (without breaking or crushing it) with a drink of water. You can take the tablet either with or without food.
If you forget to take a dose on time, take it when you remember. If you do not remember until the following day, leave out the missed dose. Do not take two doses together to make up for a forgotten dose.
Ottenere il massimo dal tuo trattamento
Torna ai contenutiEach time you collect a new supply of tablets from your pharmacy, make sure they look to be the same as you have had before. This is because there is a high-dose brand of finasteride tablet available for the treatment of a different condition. If you are unsure that you have the correct tablets, ask your pharmacist to check for you.
Your hair growth may start to improve within a few months, although it can take up to a year or so for you to notice the full benefit. You will need to continue treatment to maintain this effect, as the balding process returns when you stop.
Finasteride may cause harm to an unborn baby. Because of this, women who are pregnant should not handle the tablets. Also, very small amounts of finasteride will be in your semen while you are taking this medicine. If you need further advice about this, speak with your pharmacist or doctor.
If you are having an operation or any medical treatment, tell the person carrying out the treatment that you are taking finasteride. This is because finasteride can interfere with a blood test used to detect prostate cancer, so you must tell your doctor about taking finasteride if you need this test.
Continua a leggere sotto
Can finasteride cause problems?
Torna ai contenutiAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the ones associated with finasteride. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Finasteride side-effects (these affect fewer than 1 in 10 men) | Cosa posso fare se sperimento questo? |
Reduced desire to have sex, inability to get an erection, breast tenderness, depressed mood, allergic-type reactions | Se uno di questi diventa problematico, parla con il tuo medico |
Importante: if you develop any pain or lumps in your breast area, or any discharge from your nipples, you should tell your doctor. This is because there have been a few rare reports of breast cancer in men taking 5-alpha reductase inhibitors like finasteride and dutasteride.
Important: there have been reports of depression in men taking finasteride, and in rare cases, thoughts of self-harming. Patient alert cards are now included with your medicine alerting you to this fact. You should share this information with your family or friends so that they can be alert for any changes in your mood. If you develop any signs of depression whilst being treated with finasteride, or you have any concerns about your mood, make an appointment to see your doctor.
If you are taking finasteride for prostate problems, you should continue to take your medication until you have spoken with your doctor and agreed a plan.
If you are taking finasteride (Propecia) for male pattern baldness, you should stop taking this medication and make an appointment to see your doctor.
In addition, taking finasteride has caused problems with sexual function in some men, including loss of libido and problems maintaining an erection. This has sometimes continued after stopping treatment. Speak with your doctor if you are concerned about this.
Se si verificano altri sintomi che ritieni possano essere dovuti alle compresse, parla con il tuo medico o farmacista per ulteriori consigli.
How to store finasteride
Torna ai contenutiTenere tutti i medicinali fuori dalla portata e dalla vista dei bambini.
Conservare in un luogo fresco e asciutto, lontano da fonti di calore e luce diretta.
Informazioni importanti su tutti i medicinali
Torna ai contenutiInformazioni importanti su tutti i medicinali
Se acquisti dei medicinali, verifica con un farmacista che siano sicuri da assumere insieme agli altri tuoi medicinali.
Non assumere mai più della dose prescritta. Se sospetti che tu o qualcun altro possa aver assunto una dose eccessiva di questo medicinale, recati immediatamente al pronto soccorso del tuo ospedale locale. Porta con te il contenitore, anche se è vuoto.
Questo medicinale è per te. Non darlo mai ad altre persone, anche se la loro condizione sembra essere la stessa della tua.
Non conservare medicinali scaduti o indesiderati. Portali alla tua farmacia locale che li smaltirà per te.
Se hai domande su questo medicinale, chiedi al tuo farmacista.
Segnala effetti collaterali di un medicinale o vaccino
Se si verificano effetti collaterali, è possibile segnalarli online tramite il sito web Yellow Card.
Video consigliati per Trattamento dello squilibrio ormonale

Non sei sicuro di mescolare i medicinali?
Controlla le possibili interazioni tra farmaci, integratori e alimenti prima di assumerli insieme.
Ulteriori letture e riferimenti
- Manufacturer's PIL, Propecia® 1 mg tablets; Merck Sharp & Dohme Limited. The electronic Medicines Compendium. Dated August 2024.
- Medicinali Completi BNF 89ª Edizione; Associazione Medica Britannica e Società Farmaceutica Reale di Gran Bretagna, Londra.
Continua a leggere sotto
Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
Next review due: 5 May 2028
5 May 2025 | Ultima versione

Chiedi, condividi, connettiti.
Esplora le discussioni, fai domande e condividi esperienze su centinaia di argomenti di salute.
Iscriviti alla newsletter di Patient
La tua dose settimanale di consigli sulla salute chiari e affidabili - scritti per aiutarti a sentirti informato, sicuro e in controllo.
Abbonandoti accetti il nostro Informativa sulla Privacy. Puoi annullare l'iscrizione in qualsiasi momento. Non vendiamo mai i tuoi dati.