Botanicals contain pharmacologically active compounds. That is the entire reason anyone takes them, and the same property makes interaction possible.
Surveys consistently find a large share of supplement users never tell their doctor what they take. The MedlinePlus guidance is explicit: your prescriber needs the full list, including anything you consider harmless.
| Medication class | Concern |
|---|---|
| Anticoagulants / antiplatelets | Ginkgo may affect platelet function |
| Thyroid medication | Ashwagandha may influence thyroid measures |
| Blood pressure medication | Additive effects from several botanicals |
| Diabetes medication | Some botanicals affect blood glucose |
| Sedatives | Additive drowsiness with some adaptogens |
| Immunosuppressants | Immune-modulating botanicals are a concern |
Tell your surgeon and anaesthetist about every supplement you take, ideally two weeks before any procedure. Several botanicals affect bleeding or interact with anaesthetic agents, and many surgical teams ask patients to stop supplements pre-operatively for exactly this reason.
This is not an argument against botanicals. It is an argument against taking them silently. Most people take supplements without incident; the exceptions cluster among people who never mentioned it to anyone with the training to spot the problem.
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