It has been estimated that in developed countries such as United States, plants drugs comprise up to 25% of the total drugs, while in fast developing countries such as China and India, it comprise up to 80%. It is expected that there are 250,000 to 500,000 species of plants on Earth. Out of these small percentages (1 to 10%) are used as foods and medicine by both humans and animal. It is possible that rest of plant may be used for foods and medicinal purposes. Hence, it has turn out to be very important to review on herbal medicinewhich will play important role in research on plant to find their possible medicinal importance. Herbal formulations means a dosage form consisting of one or more herbs or processed herbs in specified quantities to provide specific nutritional, cosmetic benefits meant for use to diagnose, treat, mitigate diseases of human beings or animals, alter the structure or physiology of human beings or animals. Herbal formulations contain an active substance or herbal substance or herbal preparation or herbal substance in combination with one or more herbal preparations. Herbal formulations are obtained by subjecting herbal substances to treatments such as extraction, distillation, expression, fractionation, purification, concentration or fermentation include comminuted or powdered. Whole, fragmented or cut plants, plants parts, algae, fungi, lichen in an unprocessed, usually dried form but sometimes fresh were used in the preparations of herbal formulations. Herbal substances are precisely defined by the plant part used and the botanical name according to the binomial system (genus, species, variety and author).