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Black cohosh
Black cohosh — 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
Actaea racemosa L. (syn. Cimicifuga racemosa) — rhizome and root (Cimicifugae racemosae rhizoma)
Agrupado aqui em Joints, urinary tract and hormones. Posição regulatória:EU herbal monograph — traditional use, with a mandatory liver warning.
O que a evidência apoia
A indicação registrada:Relief of menopausal complaints such as hot flushes and profuse sweating.
Black cohosh is the most widely used non-hormonal herbal option for hot flushes, and the one carrying a regulator-mandated liver warning on the pack. The herbal committee at the European Medicines Agency reviewed reports of liver injury associated with black cohosh products and required them to warn users to stop and see a doctor if signs of liver damage appear — unusual tiredness, yellowing of the skin or eyes, dark urine, upper abdominal pain, loss of appetite. Cases are rare and causality in many of the reports is uncertain, but the warning stands and it is the single most important thing to know before starting. On efficacy, the trials for hot flushes are mixed; a traditional-use registration does not imply proven benefit, and it is not a hormone, not a treatment for osteoporosis, and not a substitute for a conversation about menopause options.
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
Osteoporosis prevention, vaginal dryness, or vaginal bleeding of unknown cause — which always needs investigating first.
Forma, força e por quanto tempo
Standardised dry extracts of the rhizome in tablets and drops. Species substitution with Asian Actaea species has been documented in commercial products, which is one argument for buying registered medicines rather than unregulated supplements.
Duração.Monograph texts limit continuous use without medical advice; anyone using it for months should be doing so with a doctor who knows.
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
Stomach upset, rash, headache and weight gain are reported. The important one is liver injury, rare but the reason for the label warning.
Quem deve evitar
Adults only, and not in pregnancy or breastfeeding. Anyone with liver disease should avoid it. Anyone with a history of breast cancer or on hormone-sensitive cancer treatment should not start it without the oncology team.
Interações com medicamentos
| Medicamento ou substância | O que é descrito |
|---|---|
| Anything else that stresses the liver | Combining it with anything else that stresses the liver — other implicated botanicals, heavy alcohol, medicines with a known hepatic signal — stacks a risk that is already the reason for the warning on the box. |
| Cancer and hormone-blocking treatment | Anyone on tamoxifen or another hormone-sensitive cancer treatment should not add it without their oncology team's agreement. The interaction question is unsettled; the stakes are not. |
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 black cohosh é usado?
Relief of menopausal complaints such as hot flushes and profuse sweating. Black cohosh is the most widely used non-hormonal herbal option for hot flushes, and the one carrying a regulator-mandated liver warning on the pack. The herbal committee at the European Medicines Agency reviewed reports of liver injury associated with black cohosh products and required them to warn users to stop and see a doctor if signs of liver damage appear — unusual tiredness, yellowing of the skin or eyes, dark urine, upper abdominal pain, loss of appetite. Cases are rare and causality in many of the reports is uncertain, but the warning stands and it is the single most important thing to know before starting. On efficacy, the trials for hot flushes are mixed; a traditional-use registration does not imply proven benefit, and it is not a hormone, not a treatment for osteoporosis, and not a substitute for a conversation about menopause options.
black cohosh 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. Osteoporosis prevention, vaginal dryness, or vaginal bleeding of unknown cause — which always needs investigating first.
Quanto black cohosh 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:Standardised dry extracts of the rhizome in tablets and drops. Species substitution with Asian Actaea species has been documented in commercial products, which is one argument for buying registered medicines rather than unregulated supplements. Monograph texts limit continuous use without medical advice; anyone using it for months should be doing so with a doctor who knows.
Quais os efeitos colaterais de black cohosh?
Stomach upset, rash, headache and weight gain are reported. The important one is liver injury, rare but the reason for the label warning.
black cohosh interage com medicamentos?
Sim — documentado paraLiver load, Cancer treatment. 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.
Devil's claw
Relief of minor joint pain, and of mild digestive complaints such as bloating and loss of appetite.
Feverfew
Prophylaxis of migraine headaches, after serious conditions have been excluded by a doctor.
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