Holy basil is POSSIBLY SAFE when used by mouth for short periods of time, up to six weeks. It’s not known if long-term use is safe.
Special Precautions & Warnings:
Pregnancy and breast-feeding: Not enough is known about the use of holy basil during pregnancy and breast-feeding. Stay on the safe side and avoid use.
Surgery: Holy basil might slow blood clotting, so there is a concern that it could increase the risk of bleeding during and after surgery. Stop using holy basil at least 2 weeks before a scheduled surgery.