Answer
It can. St John's wort has been associated with severe low blood pressure and delayed waking with related inhaled anaesthetics, so disclose all herbal products.
Sources for this answer
- Sevoflurane 100% Inhalation Vapour, liquid — Current selected SmPCemc · Summary of Product Characteristics
- Sevoflurane — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.