Griseofulvina para infecções fúngicas
Revisado por Sid DajaniÚltima atualização por Michael Stewart, MRPharmSLast updated 13 Jan 2023
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Griseofulvin is prescribed to treat fungal infections.
A course of treatment may last from a few weeks to several months.
Griseofulvin may harm an unborn child - you must avoid getting pregnant or fathering a child.
The most common side-effects are feeling sick (nausea) and diarrhoea.
At a glance
Griseofulvin is an antifungal medicine, mainly used for fungal skin or scalp infections.
Take griseofulvin after food, exactly as your doctor tells you.
Treatment can last from a few weeks to several months and must continue for two weeks after clearance.
It reduces the effectiveness of hormonal contraception, so discuss suitable alternatives with your doctor.
Avoid pregnancy or fathering a child during treatment and for a period afterwards.
Do not drink alcohol while taking this medicine.
Some people find their skin becomes more sensitive to sunlight.
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About griseofulvin
Tipo de medicamento | Antifúngico |
Usado para | Infecções fúngicas |
Disponível como | Tabletsand oral liquid medicine |
Griseofulvin is a medicine which is used to treat fungal infections. It is mainly prescribed for infections occurring on the skin or scalp. It is prescribed in particular for an infection called scalp ringworm (also called tinea capitis). It is also used to treat some nail infections, especially when other more frequently prescribed treatments are not suitable for some reason.
Before taking griseofulvin
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 griseofulvin it is important that your doctor knows:
Se você está grávida, tentando ter um bebê ou amamentando.
Se você tiver problemas com o funcionamento do seu fígado.
If you have an inflammatory condition called systemic lupus erythematosus (SLE). Griseofulvin can make this condition worse.
Se você tem um distúrbio sanguíneo hereditário raro chamado porfiria.
Se você já teve uma reação alérgica a um medicamento.
If you, or your partner, are using hormonal methods of contraception ('the pill').
Se você estiver tomando outros medicamentos. 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 griseofulvin
Voltar ao conteúdoBefore you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The manufacturer's leaflet will give you more information about griseofulvin and a full list of side-effects which you may experience from taking it.
Take griseofulvin exactly as your doctor tells you to. The usual dose for adults is 500-1000 mg each day. This can often be taken as a single daily dose, although your doctor may recommend that you take it divided into smaller doses spaced throughout the day. Doses for children depend upon the weight of the child. Children may be prescribed low-strength (125 mg) tablets to take, or oral liquid medicine.
Swallow the tablets whole with a drink of water. It is important that you take your doses of griseofulvin after a meal or snack. This is because the presence of food in your stomach helps your body to absorb the medicine properly.
If you forget to take a dose, take it as soon as you remember, unless it is nearly time for your next dose, in which case leave out the forgotten dose. Do not take two doses together to make up for a missed one.
Obtendo o máximo do seu tratamento
Voltar ao conteúdoTry to keep your regular appointments with your doctor. This is so your doctor can check on your progress. Treatment with griseofulvin may last from a few weeks to several months. It is important that you continue to take it until the infection has completely cleared, and then for a further two weeks afterwards.
If you drink alcohol, ask your doctor for advice about drinking whilst taking griseofulvin. Griseofulvin can increase the effects of alcohol and may not be recommended for you.
You must avoid getting pregnant or fathering a child while you are taking griseofulvin. In addition, women should avoid getting pregnant for at least a month after the treatment has finished, and men should avoid fathering a child for at least six months afterwards.
Make sure you discuss with your doctor which types of contraception are suitable for you and your partner. This is particularly important if you normally rely on hormonal contraception ('the pill'), as griseofulvin reduces its effectiveness.
If you buy or take any over-the-counter medicines, check with your doctor or a pharmacist that they are suitable for you to take with griseofulvin.
A few people taking griseofulvin find that their skin becomes more sensitive to sunlight. Protect your skin from bright sunlight until you know how your skin reacts, and do not use sunbeds.
If you are having an operation or dental treatment, tell the person carrying out the treatment that you are taking griseofulvin.
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Can griseofulvin 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 griseofulvin. 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.
Griseofulvin side-effects | O que posso fazer se passar por isso? |
Sentindo-se mal (náusea) ou vomitando, diarreia | Eat simple meals - avoid rich or spicy food. Drink plenty of water to replace lost fluid |
Dor de cabeça | Beba bastante água e peça ao seu farmacêutico que recomende um analgésico adequado. Se as dores de cabeça continuarem, fale com o seu médico |
Sentindo-se sonolento ou com sono | Não dirija e não use ferramentas ou máquinas até se sentir melhor. Não beba álcool |
Se você sentir quaisquer outros sintomas que acha que podem ser devido a este medicamento, fale com seu médico ou farmacêutico.
How to store griseofulvin
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.
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.

Inseguro sobre misturar medicamentos?
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Perguntas frequentes
What is griseofulvin typically used for?
Griseofulvin is an antifungal medicine primarily used for fungal infections on the skin or scalp, particularly scalp ringworm (tinea capitis). It can also be used for some nail infections, especially when other common treatments aren't suitable.
How long will I need to take griseofulvin?
The duration of treatment with griseofulvin can vary, lasting from a few weeks to several months. It's crucial to continue taking the medicine until the infection has completely cleared, and then for an additional two weeks afterwards, as advised by your doctor.
Are there any specific instructions for taking griseofulvin with food?
Yes, it is important to take your doses of griseofulvin after a meal or snack. This helps your body absorb the medicine more effectively.
Can I drink alcohol while taking griseofulvin?
You should ask your doctor for advice about consuming alcohol while on griseofulvin. This medicine can increase the effects of alcohol, so it might not be recommended for you.
What should I do if my skin becomes sensitive to sunlight while on this medication?
If you notice your skin becoming more sensitive to sunlight while taking griseofulvin, you should protect your skin from bright sun. It's also advised not to use sunbeds until you understand how your skin reacts to the medication.
What if I miss a dose of griseofulvin?
If you forget a dose, take it as soon as you remember, unless it is almost time for your next scheduled dose. In that case, you should skip the missed dose. Do not take two doses together to compensate for the one you missed.
How should I store griseofulvin?
You should keep griseofulvin out of the reach and sight of children. Store it in a cool, dry place, away from direct heat and light.
Leitura adicional e referências
- Manufacturer's PIL, Griseofulvin 500 mg Tablets; Chemidex Pharma Ltd, The electronic Medicines Compendium. Dated September 2019.
- 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

Helen Allen, MPharm
Pharmacist, Medical Author
MPharm
Helen Allen qualified as a Pharmacist in 1979 and spent 3 years as the drug information leaflets' author for EMIS.
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: 12 Jul 2027
13 Jan 2023 | Última versão
15 Oct 2013 | Publicado originalmente
Escrito por:
Helen Allen, MPharm

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