Sage leaf extract is a concentrated form of Salvia officinalis. Manufacturers standardize it for rosmarinic acid, a key polyphenol. Compared to whole sage leaf, the extract contains more polyphenols and far less volatile oils, including thujone. People take it to support memory, mood, and cognitive clarity.
The extract comes in capsules or liquid drops. Doses differ between products, so follow the label. Avoid sage leaf extract if you are pregnant or breastfeeding. The extract may also interact with anticonvulsant, anticholinergic, and blood pressure medications.