Summer savory is likely safe in food amounts. It is possibly safe for most people when taken by mouth in usual medicinal amounts or when the oil is diluted before putting on the skin.
Summer savory can cause skin problems. The concentrated, undiluted oil is very irritating and should not be used.
Special Precautions & Warnings:
Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking summer savory if you are pregnant or breast-feeding. Stay on the safe side and avoid use.
Bleeding disorders: Summer savory might slow blood clotting and increase the risk of bleeding. There is concern that summer savory might make bleeding disorders worse.
Surgery: Summer savory might slow blood clotting. There is concern that summer savory might increase the risk for bleeding during and after surgical procedures. Stop using summer savory at least 2 weeks prior to a scheduled surgery.