TempoLife › Funções › Herb and spice reference: evidence, dose and interactions › cranberry
Cranberry
Cranberry — o que a monografia europeia realmente apoia, para que não é, a forma e durante quanto tempo se destina a ser usado, efeitos adversos e a 2 interacção medicamentosas documentada.
Esta é uma página de referência, não um diagnóstico nem uma receita. Os produtos à base de plantas são farmacologia a sério: têm efeitos, efeitos adversos e interações. Diga ao médico e ao farmacêutico tudo o que toma, incluindo chás e suplementos, e nunca pare nem altere um medicamento prescrito por causa do que ler aqui.
O que é
Vaccinium macrocarpon Aiton — fruit and juice
Nomes locais na região que este sítio serve:jõhvikas (ET) · karpalo (FI) · клюква (RU).
Agrupado aqui em Joints, urinary tract and hormones. Posição regulamentar:Food and food supplement; not a monographed herbal medicine for infection in the EU.
O que a evidência apoia
A indicação registada:Reducing the chance of repeat urinary tract infections in some groups — not treating an infection that is already present.
Cranberry is the rare case where a large, independent systematic review moved the answer. A Cochrane review of cranberry products, updated in 2023, concluded that they reduce the risk of repeat symptomatic, culture-confirmed urinary tract infections in women with recurrent infections and in children, while finding no clear benefit in several other groups — older people in institutions, people with bladder-emptying problems, and pregnant women. The proposed mechanism is proanthocyanidin interference with bacterial adhesion to the bladder wall, and product strength varies enormously, which is why "cranberry" as a category performs less consistently than any single trial. A regional footnote: the Estonian jõhvikas and Finnish karpalo are the native small cranberry, Vaccinium oxycoccos; the fruit in supplements is almost always the larger American species.
B — Traditional use, trials point the same way Registered on long-standing use, and independent reviews of human trials point in the same direction without settling the question.
Para que não é
Treating an infection. Burning, urgency, fever, flank pain or blood in the urine need to be seen, because an untreated urinary infection can reach the kidneys. Cranberry does not replace antibiotics and does not shorten an infection.
Forma, força e durante quanto tempo
Capsules and tablets standardised to proanthocyanidin content, unsweetened juice, and sweetened juice drinks, which are mostly sugar and water.
Duração.Prevention is by definition long-term, which makes the sugar content of juice products a genuine consideration.
Nenhum número em gramas aparece nesta página de propósito. A parte da planta, o solvente de extracção e a razão droga-extracto juntos definem uma preparação, e um número tirado de uma não descreve outra. O raciocínio está no hub; a quantidade que se aplica a si é a impressa na embalagem que segura, e um farmacêutico lê-a consigo.
Efeitos adversos
Stomach upset and diarrhoea at high intakes. Cranberry is relatively high in oxalate, which is a consideration for people who form calcium-oxalate kidney stones.
Quem deve evitá-lo
Fine as a food for most people. Anyone with recurrent infections should still have the reason for them looked at rather than only prevented.
Interações com medicamentos
| Medicamento ou substância | O que é descrito |
|---|---|
| Anticoagulants and antiplatelets (warfarin, DOACs, aspirin, clopidogrel) | UK regulators issued a caution in the early 2000s after reports of raised INR in warfarin patients drinking cranberry juice. Later controlled studies have been largely reassuring, but the standing advice has not changed: keep intake steady and tell whoever monitors your INR. |
| Diabetes medicines and insulin | Sweetened cranberry juice drinks carry a substantial sugar load; unsweetened juice and capsules do not. |
A vista inversa — começar pelo medicamento em vez da planta — está na referência de interações de medicamentos, alimentos e álcool, e resumido para cada erva neste sítio.
Como alimento
Este também está na cozinha, pelo que os números de nutrição valem ter ao lado da farmacologia: veja a página de dados de alimentos para calorias e nutrientes por 100 g e por porção. Quantidades culinárias e preparações medicinais são exposições diferentes, e a diferença costuma ser toda a história de segurança.
Fontes:NIH National Center for Complementary and Integrative Health — herb fact sheets· verificado2026-09-06
Perguntas frequentes
Para que é usado cranberry?
Reducing the chance of repeat urinary tract infections in some groups — not treating an infection that is already present. Cranberry is the rare case where a large, independent systematic review moved the answer. A Cochrane review of cranberry products, updated in 2023, concluded that they reduce the risk of repeat symptomatic, culture-confirmed urinary tract infections in women with recurrent infections and in children, while finding no clear benefit in several other groups — older people in institutions, people with bladder-emptying problems, and pregnant women. The proposed mechanism is proanthocyanidin interference with bacterial adhesion to the bladder wall, and product strength varies enormously, which is why "cranberry" as a category performs less consistently than any single trial. A regional footnote: the Estonian jõhvikas and Finnish karpalo are the native small cranberry, Vaccinium oxycoccos; the fruit in supplements is almost always the larger American species.
É que cranberry funciona?
Classificado aqui B: Registered on long-standing use, and independent reviews of human trials point in the same direction without settling the question. Treating an infection. Burning, urgency, fever, flank pain or blood in the urine need to be seen, because an untreated urinary infection can reach the kidneys. Cranberry does not replace antibiotics and does not shorten an infection.
Quanto cranberry devo tomar?
Esta referência não imprime números em gramas, porque não se transferem entre preparações de força de extracto diferente. O que se pode dizer com honestidade é a forma e a duração:Capsules and tablets standardised to proanthocyanidin content, unsweetened juice, and sweetened juice drinks, which are mostly sugar and water. Prevention is by definition long-term, which makes the sugar content of juice products a genuine consideration.
Quais os efeitos adversos de cranberry?
Stomach upset and diarrhoea at high intakes. Cranberry is relatively high in oxalate, which is a consideration for people who form calcium-oxalate kidney stones.
É que cranberry interage com medicamentos?
Sim — documentado paraAnticoagulants, warfarin, Diabetes medicines. Cada uma é descrita nesta página, com uma ligação 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.
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.
Feverfew
Prophylaxis of migraine headaches, after serious conditions have been excluded by a doctor.
Manter a lista toda num só sítio
TempoLife regista suplementos juntamente com comida, sono e como realmente se sentiu — pelo que a resposta a “o que está a tomar?” é um ecrã, não um palpite.