Resveratrol
A plant polyphenol marketed for antioxidant and healthy-ageing support
Forms
Capsules and tablets, often derived from Japanese knotweed or grape extract
Advantages
Has antioxidant properties and is widely studied in the laboratory
Disadvantages
Human results are inconsistent; it is poorly absorbed; benefits in people are not clearly established
Side effects
Digestive upset, nausea, or diarrhoea at higher doses
Interactions
May add to the effect of blood thinners and antiplatelet drugs; may affect medicines processed by the liver
At-risk groups
People with hormone-sensitive conditions, those on blood thinners, and those approaching surgery should seek advice
Cautions
May act like oestrogen in the body, so use caution with hormone-sensitive conditions; stop before surgery due to a blood-thinning effect
Educational information only — not medical advice. This content does not diagnose, treat, or replace consultation with a qualified healthcare professional. Always seek professional medical advice for symptoms, supplement use, or health concerns.