Abstract
The use of plants by man came about through observation of their definite effects on man and animals. Herbalists employ both physical and psychologicological treatments and herbal medicines can be used in powders, concoction, decoction, soup or ointment. Various plants used as anti-infective agents, antimalarials, laxatives, cardiovascular and nervous remedies, or containing proteolytic ferments, steroid sources, sweeteners, anti-tumour substances and as source for materials for dosage forms are discussed. Generally, plants useful in pharmaceutical and food industries and those with substances of general economic importance are also described.
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