Fluid extract is a concentrated liquid form of an herb or plant extract. It can also be called liquid extract, tincture, or extractum. Although these terms are sometimes used interchangeably, they may have slightly different meanings depending on the context. A tincture is usually an alcohol-based extract, while a fluid or liquid extract may be a mixture of water and alcohol. Extractum is a term commonly used in pharmacy to refer to a concentrated liquid form of a drug. Regardless of the term used, fluid extract remains a popular form of herbal medicine, known for its ease of use and high potency.