Extracts made with alcohol will last approximately 5 years and extracts made with glycerine will last 1-2 years. Glycerites are great for children as glycerine is sweet. Not all extracts should be given to children or pregnant women so do research before giving either one. Extracts made with just water won’t last long at all, approximately 1-2 weeks if left in refridgerator. (Bacteria will grow fast is plain water if not properly stored.