Tinctures are liquid alcoholic preparations containing the active principles of vegetable drugs or plant materials. They are usually prepared by maceration or percolation or may be prepared by dissolving the corresponding liquid extract or chemical substances in alcohol or hydroalcoholic solvent. Examples are Belladonna tincture, Cardamom tincture and Nux vomica tincture.
Learning Objective Extracts Extracts are concentrated herbs in liquid form. Powdered or dried herbs are added to a fluid or solvent and then stored for a suitable period of time. Alcohol-based extracts are usually preferred over other solvents. Herbal extracts can be classified as follows:
Learning Objective Herbal dosage forms include solid, liquid and semisolid preparations. The basic principles involved in the preparation of these dosage forms are similar to those of allopathic processes, but they differ in the technique and method of preparation. Various herbal or Ayurvedic dosage forms are described as follows:
Disadvantages
Herbals are crude drugs of vegetable origin, the parts or extracts of which are used to alleviate symptoms or to treat diseased states. Herbal drugs are finished labeled products that contain active ingredients such as aerial or underground parts of plants or other plant material, or combinations thereof, whether in the crude state or as…