Dutasterida para aumento da glândula prostática
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Revisado por Sid DajaniÚltima atualização por Michael Stewart, MRPharmSLast updated 11 de maio de 2024
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Dutasteride is for men only. It must not be taken by women, children or adolescents.
Take one capsule each day.
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
Dutasteride is a medicine used to treat an enlarged prostate gland in men.
It works by shrinking the prostate, which helps improve symptoms like difficulty passing urine.
Take one capsule daily at the same time each day, swallowing it whole.
It can take up to six months to feel the full benefit of this medicine.
Dutasteride can affect unborn babies, so special care is needed if your partner could be pregnant.
Tell your doctor or pharmacist if you experience reduced sex drive, erection problems, or breast tenderness.
Report any breast pain, lumps, or nipple discharge to your doctor.
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About dutasteride
Tipo de medicamento | 5-alpha reductase inhibitor |
Usado para | Enlargement of the prostate gland in men |
Também chamado de | Avodart®; |
Disponível como | Cápsulas |
The prostate gland commonly becomes larger in older men. O aumento da glândula prostática também é chamado de hiperplasia prostática benigna (HPB). The prostate 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.
Dutasteride 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.
Sometimes, more than one type of medicine is needed to control the symptoms of prostate enlargement. Dutasteride is available in combination with another medicine for prostate enlargement, called tamsulosina. The combination brand is called Combodart® and it may give quicker and better relief of symptoms than either medicine alone.
Before taking dutasteride
Voltar ao conteúdoSome 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 dutasteride it is important that your doctor knows:
Se você já teve uma reação alérgica a um medicamento.
Se você tiver algum problema com o funcionamento do seu fígado.
Se você estiver tomando ou usando qualquer outro medicamento. Isso inclui quaisquer medicamentos que você esteja tomando e que estejam disponíveis para compra sem receita médica, bem como medicamentos fitoterápicos e complementares.
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How to take dutasteride
Voltar ao conteúdoBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about dutasteride and will provide you with a full list of the side-effects which you may experience from taking it.
Take dutasteride exactly as your doctor tells you to. Take one capsule each day. Swallow the capsule whole - do not chew or open the capsule as this could irritate your mouth.
You can take the capsule either before or after a meal, but try to take the capsule 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.
Obtendo o máximo do seu tratamento
Voltar ao conteúdoYour 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 capsules 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.
Dutasteride may cause harm to an unborn baby. Because of this, women who are pregnant should not handle these capsules if they are damaged or leaking. Also, small amounts of dutasteride 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 dutasteride. This is because dutasteride can interfere with a blood test used to detect prostate cancer, so you must tell your doctor about taking dutasteride if you need this test.
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Can dutasteride cause problems?
Voltar ao conteúdoAlong 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 dutasteride. 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 dutasteride side-effects (these affect fewer than 1 in 10 men) | O que posso fazer se passar por isso? |
Reduced desire to have sex, inability to get an erection, breast tenderness | Se algum desses se tornar problemático, fale com seu médico |
Dizziness when taken with tamsulosin | Não dirija e não use ferramentas ou máquinas enquanto estiver afetado |
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.
Se você sentir quaisquer outros sintomas que acha que podem ser devido ao medicamento, fale com seu médico ou farmacêutico para mais conselhos.
How to store dutasteride
Voltar ao conteúdoMantenha todos os medicamentos fora do alcance e da vista das crianças.
Armazene em local fresco e seco, longe de calor e luz diretos.
Informações importantes sobre todos os medicamentos
Voltar ao conteúdoInformações importantes sobre todos os medicamentos
Nunca tome mais do que a dose prescrita. Se suspeitar que você ou outra pessoa possa ter tomado uma overdose deste medicamento, vá ao departamento de acidentes e emergências do hospital local. Leve o recipiente com você, mesmo que esteja vazio.
If you buy any medicines, always check with a pharmacist that they are safe to take alongside your prescribed medicines.
Este medicamento é para você. Nunca o dê a outras pessoas, mesmo que a condição delas pareça ser a mesma que a sua.
Não guarde medicamentos vencidos ou indesejados. Leve-os à sua farmácia local, que se encarregará de descartá-los para você.
Se você tiver alguma dúvida sobre este medicamento, pergunte ao seu farmacêutico.
Relatar efeitos colaterais de um medicamento ou vacina
Se você sentir efeitos colaterais, pode relatá-los online através do Yellow Card website.

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Verifique possíveis interações entre medicamentos, suplementos e alimentos antes de tomá-los juntos.
Perguntas frequentes
What is the typical time frame to see improvement in symptoms after starting dutasteride?
You might start to notice an improvement in your symptoms within a few weeks of beginning treatment. However, it can take up to six months to experience the full benefits, as the prostate gland needs time to gradually shrink. It's important to continue taking the capsules regularly, even if you don't feel better right away.
Are there any specific lifestyle changes I should consider while taking dutasteride to help my symptoms?
Yes, some lifestyle adjustments can help. Consider reducing or stopping your intake of caffeine, found in tea, coffee, and cola, as well as alcohol, as these can make your symptoms worse. If you smoke, quitting can significantly improve your symptoms because nicotine irritates the bladder. Your doctor can provide advice on quitting smoking.
How does dutasteride work to help an enlarged prostate?
Dutasteride works by blocking an enzyme called 5-alpha reductase, which is responsible for converting testosterone into dihydrotestosterone. Dihydrotestosterone contributes to prostate enlargement. By reducing the amount of this hormone in the prostate, dutasteride helps the gland shrink, making it easier for you to pass urine.
What precautions should be taken regarding women handling dutasteride capsules?
Dutasteride can be harmful to an unborn baby. For this reason, pregnant women should not handle the capsules if they are damaged or leaking. This precaution helps prevent exposure to the medication.
Why is it important to inform doctors that I am taking dutasteride before certain medical procedures or blood tests?
It's important to tell medical staff that you are taking dutasteride before any operations or medical treatments. This is because dutasteride can interfere with a blood test used to detect prostate cancer. Ensuring your doctor knows you are on dutasteride is crucial if you need this specific test.
Can I chew or open the dutasteride capsules?
No, you should swallow the capsule whole. Do not chew or open the capsule, as doing so could cause irritation in your mouth.
Are there other medications that can be prescribed with dutasteride for better symptom control?
Yes, sometimes more than one medicine is needed for prostate enlargement. Dutasteride is available in a combination product with another medicine called tamsulosin. This combination, known as Combodart®, may offer quicker and more effective relief of symptoms compared to using either medicine alone.
Leitura adicional e referências
- Manufacturer's PIL, Avodart® 0.5 mg soft capsules; GlaxoSmithKline UK, O Compêndio Eletrônico de Medicamentos. Datado de agosto de 2023.
- Medicamentos Completo BNF 89ª Edição; Associação Médica Britânica e Sociedade Real de Farmácia da Grã-Bretanha, Londres.
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About the authorView full bio

Michael Stewart, MRPharmS
Gerente de Revisão de Folhetos de Medicamentos – Contratado, Farmacêutico
BPharm (Hons), MRPharmS
Michael é um farmacêutico comunitário atuando nas Midlands e em South Yorkshire, com mais de 20 anos de experiência em aconselhamento sobre medicamentos e condições médicas. Ele tem uma sólida formação em treinamento em saúde, tendo produzido e ministrado cursos de treinamento para equipes de farmácia e funcionários de ambientes de cuidados residenciais, incluindo enfermeiros. Ele também contribuiu para conselhos consultivos de farmácia para o manejo de condições de baixa gravidade na comunidade.
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.
Histórico do artigo
As informações nesta página são escritas e revisadas por clínicos qualificados.
Próxima revisão prevista: 31 Mar 2027
11 de maio de 2024 | Última versão

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