Many of the studies done on herbs use an extraction of the plant. Oils are usually used externally; tinctures are for internal use (oil of oregano is actually a tincture). Here are recipes for a ...

An herbal tincture is a concentrated liquid form of one or more herbs. To make a tincture, a person must soak parts of an herb in alcohol or vinegar. Herbal tinctures are not regulated in the United ...