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Introduction

Introduction of Pharmacognosy

Synonyms: Foxglove leaves, Digitalis Folium, Folia Digitalis, Digitalis Leaf Botanical source: Digitalis consists of the dried leaves of Digitalis purpurea Linn., which are rapidly dried at a temperature between 50 to 60°C immediately after collection. The plant is a biennial...
Determination of the purity of a drug is an important exercise in the evaluation of drugs. Apparent correct identity does not always guarantee the purity of the drug as drugs of correct identity can be adulterated in a variety...
Plants have been serving as sources of drugs and pharmaceuticals for man and other animals since time immemorial. There are about half a million of plants now growing on earth. Many of these plants possess therapeutic and pharmaceutical properties....
As evident from the discussion on the occurrence and type of adulteration in crude drugs, qualities of drugs offered for sale in the market cannot always be guaranteed. Thus, it is necessary to evaluate all commercial varieties of crude...
Many crude drugs are derived from the underground or subterranean organs or structures of plants. These include some roots and modified underground stems, such as rhizomes, corms, and bulbs. Roots Roots, which constitute drugs, are usually the strongly developed primary (tap)...
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