Unless you are a trained Aromatherapist, for all practical purposes you will be better served using Clary Sage.
100% pure Sage essential oil (Salvia officinalis).
Lawless, The Encyclopaedia of Essential Oils
Knox, Everybody's Aromatherapy Pocket Reference
Essential oils are highly concentrated plant essences. The ingestion of essential oils is not recommended without prior advice from your health care practitioner. Dilute in a carrier or base when necessary. Read our quick guide: Essential Oils