TempoLife › Recursos › Herb and spice reference: evidence, dose and interactions › feverfew
Feverfew
Feverfew — o que a monografia europeia realmente apoia, para que não é, a forma e por quanto tempo deve ser usado, efeitos colaterais e a 2 interação medicamentosas documentada.
Esta é uma página de referência, não um diagnóstico nem uma receita. Produtos herbais são farmacologia de verdade: têm efeitos, efeitos colaterais e interações. Conte ao médico e ao farmacêutico tudo o que toma, incluindo chás e suplementos, e nunca pare ou mude um medicamento prescrito por causa do que ler aqui.
O que é
Tanacetum parthenium (L.) Sch.Bip. — herb (Tanaceti parthenii herba)
Agrupado aqui em Joints, urinary tract and hormones. Posição regulatória:Monografia herbal da UE — uso tradicional.
O que a evidência apoia
A indicação registrada:Prophylaxis of migraine headaches, after serious conditions have been excluded by a doctor.
The wording of feverfew's registration is the most instructive thing about it. It is a preventive taken daily over months, not something to swallow during an attack, and the indication explicitly requires that a doctor has first excluded serious causes of headache. The trial evidence is inconsistent: a Cochrane review of feverfew for preventing migraine found the evidence insufficient to establish an effect, with the better-conducted trials the least encouraging. Two practical details set it apart. Chewing fresh leaves, the old folk method, causes mouth ulcers and soreness in a substantial share of people. And stopping abruptly after months of use has been described as producing a rebound of headache, anxiety, stiffness and poor sleep — so if you stop, taper.
C — Traditional use only Plausible from thirty or more years of use, which is what a traditional-use registration means. No clinical evidence was required and none has settled it.
Para que não é
Treating a migraine attack, and any new, sudden, severe or changed headache, headache with fever and a stiff neck, or headache after a head injury — those need urgent assessment.
Forma, força e por quanto tempo
Dried leaf in capsules and tablets, sometimes standardised to parthenolide content, which varies widely between products. Fresh leaf chewing is the traditional method and the one that ulcerates mouths.
Duração.Prophylaxis is judged over months, not days. Taper rather than stop abruptly after long use.
Nenhum número em gramas aparece nesta página de propósito. A parte da planta, o solvente de extração e a razão droga-extrato juntos definem uma preparação, e um número tirado de uma não descreve outra. O raciocínio está no hub; a quantidade que se aplica a você é a impressa na embalagem que segura, e um farmacêutico lê com você.
Efeitos colaterais
Mouth ulceration and tongue soreness from fresh leaf. Stomach upset, bloating. Allergic reactions in daisy-family (Asteraceae) sensitive people.
Quem deve evitar
Not in pregnancy — feverfew has traditional use as a uterine stimulant — and not while breastfeeding. Most registrations are for adults only.
Interações com medicamentos
| Medicamento ou substância | O que é descrito |
|---|---|
| Anticoagulants and antiplatelets (warfarin, DOACs, aspirin, clopidogrel) | Feverfew appears on the bleeding-risk list. Evidence is limited to laboratory work and case reports, and the caution is standard rather than proven. |
| Anti-inflammatory painkillers (NSAIDs) | Regular anti-inflammatory painkillers are the other common ingredient in a migraine cupboard, and medication-overuse headache is a far more frequent cause of daily headache than most people taking them realise. |
A visão inversa — começar pelo medicamento em vez da planta — está na referência de interações de medicamentos, alimentos e álcool, e resumido para cada erva neste site.
Fontes:European Medicines Agency — Committee on Herbal Medicinal Products (HMPC), European Union herbal monographs · NIH National Center for Complementary and Integrative Health — herb fact sheets· verificado2026-09-06
Perguntas frequentes
Para que feverfew é usado?
Prophylaxis of migraine headaches, after serious conditions have been excluded by a doctor. The wording of feverfew's registration is the most instructive thing about it. It is a preventive taken daily over months, not something to swallow during an attack, and the indication explicitly requires that a doctor has first excluded serious causes of headache. The trial evidence is inconsistent: a Cochrane review of feverfew for preventing migraine found the evidence insufficient to establish an effect, with the better-conducted trials the least encouraging. Two practical details set it apart. Chewing fresh leaves, the old folk method, causes mouth ulcers and soreness in a substantial share of people. And stopping abruptly after months of use has been described as producing a rebound of headache, anxiety, stiffness and poor sleep — so if you stop, taper.
feverfew funciona?
Classificado aqui C: Plausible from thirty or more years of use, which is what a traditional-use registration means. No clinical evidence was required and none has settled it. Treating a migraine attack, and any new, sudden, severe or changed headache, headache with fever and a stiff neck, or headache after a head injury — those need urgent assessment.
Quanto feverfew devo tomar?
Esta referência não imprime números em gramas, porque não se transferem entre preparações de força de extrato diferente. O que se pode dizer com honestidade é a forma e a duração:Dried leaf in capsules and tablets, sometimes standardised to parthenolide content, which varies widely between products. Fresh leaf chewing is the traditional method and the one that ulcerates mouths. Prophylaxis is judged over months, not days. Taper rather than stop abruptly after long use.
Quais os efeitos colaterais de feverfew?
Mouth ulceration and tongue soreness from fresh leaf. Stomach upset, bloating. Allergic reactions in daisy-family (Asteraceae) sensitive people.
feverfew interage com medicamentos?
Sim — documentado paraAnticoagulants, warfarin, NSAIDs. Cada uma é descrita nesta página, com um link para a referência do lado medicamento onde existir.
Outros emjoints, urinary tract and hormones
Nettle
Leaf: to increase the amount of urine and so flush the urinary tract in minor complaints, and for minor joint pain. Root: lower urinary tract symptoms related to benign enlargement of the prostate.
Saw palmetto
Relief of lower urinary tract symptoms related to benign prostatic hyperplasia, after a doctor has excluded serious conditions.
Cranberry
Reducing the chance of repeat urinary tract infections in some groups — not treating an infection that is already present.
Black cohosh
Relief of menopausal complaints such as hot flushes and profuse sweating.
Devil's claw
Relief of minor joint pain, and of mild digestive complaints such as bloating and loss of appetite.
Manter a lista toda num só lugar
TempoLife registra suplementos junto com comida, sono e como você realmente se sentiu — então a resposta a “o que está tomando?” é uma tela, não um palpite.