Finasteride per l'ingrandimento della ghiandola prostatica
Proscar
Revisione paritaria di Sid DajaniUltimo aggiornamento di Michael Stewart, MRPharmSUltimo aggiornamento 16 May 2024
Rispetta le linee guida editoriali
- ScaricaScarica
- Condividi
- Language
- Discussione
- Versione audio
- Add to preferred sources on Google
Finasteride is for men only. It must not be taken by women, children or adolescents.
Assumi una compressa al giorno.
Your symptoms may start to improve within a few weeks, although it can take up to six months for you to notice the full benefit.
At a glance
Finasteride is a medicine used to treat an enlarged prostate gland in men.
It works by shrinking the prostate, which helps improve urination problems.
Take one 5 mg tablet daily, at the same time each day, with or without food.
It can take up to six months to notice the full benefits of finasteride.
Pregnant women should not handle finasteride tablets.
Reduced sex drive and erection problems are common side-effects.
In questo articolo:
Video picks for Medicina genitourinaria
Continua a leggere sotto
About finasteride
Tipo di medicinale | 5-alpha reductase inhibitor |
Utilizzato per | Enlargement of the prostate gland in men |
Chiamato anche | Proscar® |
Disponibile come | Compresse |
The prostate gland commonly becomes larger in older men. L'ingrossamento della ghiandola prostatica è anche chiamato iperplasia prostatica benigna (IPB). The prostate gland is situated close to the bladder, so its enlargement can cause problems with passing urine. Common symptoms that are experienced are having to wait before your urine starts to flow, taking longer at the toilet, dribbling urine, and a feeling that your bladder is not quite empty.
Finasteride works by blocking the conversion of the hormone testosterone to the more potent hormone dihydrotestosterone. It does this by blocking an enzyme called 5-alpha reductase. Dihydrotestosterone is partly responsible for making the prostate enlarge. Therefore, a reduced amount of dihydrotestosterone in the prostate causes it to shrink. This helps you to pass urine more easily.
Small doses of finasteride are prescribed for men with hair loss. A completely different brand of finasteride tablet is prescribed for men with this condition. There is more information about the tablets used for this in a medicine leaflet called Finasteride for male pattern baldness.
Before taking finasteride
Torna ai contenutiSome medicines are not suitable for people with certain conditions, and sometimes a medicine may 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.
Se stai assumendo o utilizzando altri medicinali. Questo include qualsiasi medicinale che stai assumendo e che è disponibile per l'acquisto senza prescrizione, così come i medicinali a base di erbe e complementari.
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 finasteride exactly as your doctor tells you to. Take one 5 mg tablet each day.
You can take the tablet either before or after a meal, but try to take it at the same time of day each day. This will help you to remember to take your doses regularly.
If you forget to take a dose on time, take it when you remember. If you do not remember until the following day, skip the missed dose. Do not take two doses together to make up for a forgotten dose.
Ottenere il massimo dal tuo trattamento
Torna ai contenutiYour symptoms may start to improve within a few weeks although it can take up to six months for you to notice the full benefit. This is because it takes time for the prostate gland to gradually shrink. Because of this, it is important that you continue to take the tablets regularly, even if you don't feel a benefit straightaway.
Remember to keep your regular appointments with your doctor. This is so your doctor can check on your progress.
Consider reducing or stopping the amount of caffeine you drink (commonly found in tea, coffee and cola) and alcohol. These can make your symptoms worse, so drinking less of these things may benefit you.
If you are a smoker, stopping smoking may significantly improve your symptoms. This is because nicotine irritates the bladder. Ask your doctor for advice on quitting.
Each 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 low-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.
Finasteride may cause harm to an unborn baby. Because of this, women who are pregnant should not handle the tablets. Also, small amounts of finasteride will be in your semen while you are taking this medicine, and it is therefore recommended that you use a barrier method of contraception (such as a condom) if your partner could become pregnant. 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 it 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 most common 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.
Common 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 | 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.
Importante: 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 segni della depressione 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 al medicinale, 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
Non assumere mai più della dose prescritta. Se sospetti che tu o qualcun altro possa aver assunto un sovradosaggio di questo medicinale, recati al pronto soccorso del tuo ospedale locale. Porta con te il contenitore, anche se è vuoto.
If you buy any medicines, always check with a pharmacist that they are safe to take alongside your prescribed medicines.
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 Yellow Card website.

Non sei sicuro di mescolare i medicinali?
Controlla le possibili interazioni tra farmaci, integratori e alimenti prima di assumerli insieme.
Domande frequenti
What happens if I accidentally miss a dose of finasteride?
If you forget a dose, take it as soon as you remember. However, if you don't remember until the next day, you should skip the missed dose and continue with your regular schedule. Do not take a double dose to compensate for the forgotten one.
How long does it typically take to see improvement in my symptoms after starting finasteride?
You might start to notice some improvement in your symptoms within a few weeks of beginning treatment. However, it can take up to six months to experience the full benefit as the prostate gland needs time to shrink gradually. It's important to continue taking the tablets regularly even if you don't feel better immediately.
Can finasteride affect my ability to have children or be around pregnant women?
Finasteride can be harmful to an unborn baby. Therefore, pregnant women should not handle the tablets. Additionally, small amounts of finasteride will be present in your semen while you are taking this medicine. If your partner could become pregnant, it is recommended to use a barrier method of contraception, such as a condom. You can speak with a pharmacist or doctor for further advice on this.
Does finasteride interact with any other health conditions or medical tests?
Finasteride can interfere with a blood test used to detect prostate cancer. It is very important to inform your doctor that you are taking finasteride if you need this particular test. Also, if you are having any operation or medical treatment, you should always tell the person performing the treatment that you are taking finasteride.
Are there lifestyle changes I can make to help my prostate symptoms while taking finasteride?
Yes, certain lifestyle adjustments can help. Reducing or stopping caffeine and alcohol intake can be beneficial as these can worsen symptoms. If you smoke, stopping smoking may significantly improve your symptoms because nicotine irritates the bladder. Your doctor can provide advice on quitting smoking.
I've heard finasteride can be used for hair loss. Is this the same medication I'm taking for my prostate?
While finasteride is prescribed for both prostate enlargement and male pattern baldness, a different brand of finasteride tablet is used for hair loss. The dosage might also differ. Each time you get a new supply of tablets, you should check that they look the same as what you've had before or ask your pharmacist if you are unsure that you have the correct tablets.
What should I do if I experience changes in my mood or thoughts while taking finasteride?
There have been reports of depression in men taking finasteride, and in rare cases, thoughts of self-harm. You should share this information with family or friends so they can be alert to any changes in your mood. If you develop any signs of depression or have concerns about your mood, you should make an appointment to see your doctor. If you are taking finasteride for prostate problems, you should continue your medication until you've discussed a plan with your doctor.
Ulteriori letture e riferimenti
- Manufacturer's PIL, Proscar® 5 mg film-coated Tablets; Organon Pharma (UK) Limited, The electronic Medicines Compendium. Dated October 2023.
- Medicinali Completi BNF 89ª Edizione; Associazione Medica Britannica e Società Farmaceutica Reale di Gran Bretagna, Londra.
Continua a leggere sotto
About the authorView full bio

Michael Stewart, MRPharmS
Medicine Leaflet Review Manager – Contractor, Pharmacist
BPharm (Hons), MRPharmS
Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.
About the reviewer

Sid Dajani
Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.
Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
Prossima revisione prevista: 17 Apr 2027
16 May 2024 | 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.
By subscribing you accept our Informativa sulla Privacy. Puoi annullare l'iscrizione in qualsiasi momento. Non vendiamo mai i tuoi dati.