Practitioners of herbalism or phytotherapy are referred to as pdf medicinal plants and their uses or phytotherapists. 1550 BC, and covers more than 700 drugs, mainly of plant origin. Eresos who in the 4th c.
C, and from Krateuas who wrote in the 1st century B. Only a few fragments of these works have survived intact, but from what remains scholars have noted a large amount of overlap with the Egyptian herbals. Chinese medical text, are herbs. Herbs also commonly featured in the medicine of ancient India, where the principal treatment for diseases was diet. 1500 years until the 1600s. 80 percent of the population of some Asian and African countries presently use herbal medicine for some aspect of primary health care. In comparison, herbal medicines can be grown from seed or gathered from nature for little or no cost.
United States have been derived from plants. At least 7,000 medical compounds in the modern pharmacopoeia are derived from plants. In a 2010 global survey of the most common 1000 plant-derived compounds, 156 had clinical trials published. Herbalism was one of 17 topics evaluated for which no clear evidence of effectiveness was found. Multiple factors such as gender, age, ethnicity, education and social class are also shown to have association with prevalence of herbal remedies use.