A case in Singapore is a good reminder of how details of "herbal" supplements should also be shared with your surgeon. In this case, it appears to have had fatal impact.
https://www.straitstimes.com/singapore/courts-crime/cordyceps-likely-led-to-post-op-bleeding
A 58-year-old woman had taken the Chinese herbal medication cordyceps a few days before an operation to remove a benign brain tumour. She did not inform her doctors before the surgery and died from extensive bleeding in her brain.
Her tumour was successfully removed, but she developed a blood clot at the surgery site shortly after her operation at Singapore General Hospital (SGH). There was also diffuse bleeding from all areas of the surgery sue to coagulopathy - a condition where the blood's ability to clot is impaired. Cordyceps, commonly taken as a supplement, has a blood-thinning effect, which increases the time for formation of blood clot.
Clear message: Please tell your doctors about any herbal supplements you may be on
