Package Leaflet: Information for the User
Dutasteride Viatris 0.5 mg Soft Capsules EFG
Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.
Contents of the Package Leaflet
The active substance is dutasteride, which belongs to a group of medicines called 5-alpha-reductase inhibitors.
Dutasteride Viatris is used in men to treat enlarged prostate (benign prostatic hyperplasia),a non-cancerous growth of the prostate caused by overproduction of a hormone called dihydrotestosterone.
As the prostate grows, it can cause urinary problems such as difficulty in the flow of urine and a need to urinate more frequently. It can also cause the stream of urine to be weaker. If left untreated, benign prostatic hyperplasia can lead to a risk of the urine flow being completely blocked (acute urinary retention). This requires immediate medical treatment. In some cases, surgery may be necessary to reduce the size of the prostate or remove it. Dutasteride Viatris reduces the production of dihydrotestosterone, which helps to reduce the size of the prostate and alleviate symptoms. This reduces the risk of acute urinary retention and the need for surgery.
Dutasteride Viatris can also be used with another medicine called tamsulosin (used to treat symptoms of enlarged prostate).
Do not take Dutasteride Viatris
If you think you may be in one of these situations, do not takethis medicine until you have consulted your doctor.
This medicine is for men only. It must not be taken by women, children, or adolescents.
Warnings and precautions
Talk to your doctor before taking Dutasteride Viatris.
- In some clinical studies, there were more patients taking dutasteride and another medicine called an alpha-blocker, such as tamsulosin, who experienced heart failure compared to patients who took only dutasteride or only an alpha-blocker. Heart failure means that your heart does not pump blood as it should.
- Make sure your doctor knows if you have liver problems. You may need some additional checks during your treatment with Dutasteride Viatris if you have any liver disease.
Dutasteride has been shown to decrease sperm count, sperm motility, and semen volume. This may reduce fertility.
In a clinical study in men at high risk of prostate cancer, men who took dutasteride were more likely to have a type of prostate cancer that was more serious than those who did not take dutasteride. The effect of dutasteride on these more serious types of prostate cancer is not clear.
Talk to your doctor or pharmacist if you have any questions about taking Dutasteride Viatris.
Mood changes and depression
Depressed mood, depression, and, less frequently, suicidal thoughts have been reported in patients treated with another medicine in the same therapeutic group (oral 5-alpha-reductase inhibitor). If you experience any of these symptoms, contact your doctor for additional medical advice as soon as possible.
Taking Dutasteride Viatris with other medicines
Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines.
Certain medicines may interact with Dutasteride Viatris, which can increase the risk of you experiencing side effects. Some of these medicines are:
Tell your doctorif you are taking any of these medicines. It may be necessary to reduce the dose of Dutasteride Viatris.
Taking Dutasteride Viatris with food and drink
Dutasteride Viatris can be taken with or without food.
Pregnancy, breast-feeding, and fertility
Pregnant women (or women who may be pregnant) must avoid contact with leaking capsules. Dutasteride is absorbed through the skin and may affect the normal development of a male baby. This risk is especially important during the first 16 weeks of pregnancy.
Use a condom during sexual intercourse. Dutasteride has been found in the semen of men taking dutasteride. If your partner is pregnant or thinks she may be pregnant, she should avoid exposure to your semen.
Dutasteride has been shown to decrease sperm count, sperm motility, and semen volume. This may reduce fertility.
Driving and using machines
It is unlikely that dutasteride will affect your ability to drive or use machines.
Dutasteride Viatris contains soybean lecithin
This medicine contains soybean lecithin, which may contain soybean oil. It must not be used in case of peanut or soy allergy.
Take this medicine exactly as your doctor has told you. If you are not sure, check with your doctor or pharmacist. If you do not take Dutasteride Viatris regularly, the control of your PSA levels may be affected.
What dose should you take
If you take more Dutasteride Viatris than you should
If you have taken too much of this medicine, contact your doctor, pharmacist, or call the Toxicology Information Service (telephone 915620420), stating the medicine and the amount taken.
If you forget to take Dutasteride Viatris
Do not take a double dose to make up for forgotten doses. Take the next dose at the usual time.
If you stop taking Dutasteride Viatris
Do not stop taking Dutasteride Viatris without talking to your doctor first. It may take up to 6 months or more to notice an effect.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Allergic reaction
Symptoms of an allergic reaction can include:
Contact your doctor immediately and stop taking Dutasteride Viatris.
Common side effects
May affect up to 1 in 10 men taking Dutasteride Viatris:
Uncommon side effects
May affect up to 1 in 100 men taking dutasteride:
Rare side effects
Frequency cannot be estimated from the available data:
Reporting of side effects
If you experience any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Spanish Medicines Agency's website: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton or blister after EXP. The expiry date refers to the last day of the month shown.
Do not store above 30°C.
Store in the original package to protect from moisture.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help protect the environment.
Composition of Dutasteride Viatris
The active substance is dutasteride. Each soft capsule contains 0.5 mg of dutasteride.
The other ingredients are:
Appearance of the product and pack contents
Soft capsules, opaque, yellow, containing a yellowish oily liquid, size 19 ± 0.8 mm x 6.9 ± 0.4 mm. They are available in white opaque PVC/PVDC-Aluminum blister packs containing 30 and 90 capsules. Not all pack sizes may be marketed.
Marketing authorisation holder and manufacturer
Marketing authorisation holder:
Viatris Pharmaceuticals, S.L.U.
C/ General Aranaz, 86
28027 - Madrid
Spain
Manufacturer:
Galenicum Health S.L.U.
Sant Gabriel, 50
08950 - Esplugues de Llobregat (Barcelona)
Spain
Cyndea Pharma, S.L
Polígono Industrial Emiliano Revilla Sanz,
Avenida de Ágreda, 31
42110-Olvega (Soria)
Spain
Pharmadox Healthcare, Ltd.
KW20A Kordin Industrial Park,
Paola , PLA 3000, Malta
SAG Manufacturing, S.L.U.
Ctra. N-I, Km 36
28750 – San Agustín de Guadalix (Madrid)
Spain
Date of last revision of this leaflet:August 2025
Detailed information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) https://www.aemps.gob.es/
The average price of DUTASTERIDE VIATRIS 0.5 mg SOFT CAPSULES in November, 2025 is around 20.11 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.
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Discuss dosage, side effects, interactions, contraindications, and prescription renewal for DUTASTERIDE VIATRIS 0.5 mg SOFT CAPSULES – subject to medical assessment and local rules.