Herbal Medicine dates back to prehistoric times. Primitive man used plants for everything from shelter and food, to clothing and medicine. Herbal medicine evolved over time, with observation and experimentation. Each village and tribe throughout the world observed and experimented with the natural plant world around them and developed a knowledge base of regional herbs and herbal medicines. Many of these primitive herbal experimentations hold true today, with many conventional medicines stemming from herbal origins. For instance, morphine originated from the use of the opium poppy herb, while Echinacea was the common herbal treatment to fight off infection prior to the creation of antibiotics

Herbal medicines are using at greater extent as these are associated with least side effects. Medicines though give immediate solutions to the health problems or illnesses, leave some side effects which become more fatal to the remaining body functioning system. Herbal medicines are extracted from the natural substances basically the plants and its products.

All plant life generates certain chemical complex during their ordinary metabolic activities which can be further categorizes as primary metabolites for example fats and sugars available in the entire plants species and the secondary metabolites though found in smaller varieties of plants, particularly in specific species or genus. The identification of healing powers in the plants has lead to growth of various herbal medicines manufacture from different plants and plants extracts.

More than 80,000 plants species are found to contain medicinal properties and widely used in treating and preventing diseases. Herbal medicines are also using in association of other therapeutic programs like acupuncture and a good deal of prescription drugs are manufactured from the plants and plants extracts. Several herbal ingredients are found in the drugs used for healing and preventing diseases for example aspirin manufactured from Salix species whose common name is willow bark and digitalis made from Digitalis purpurea, foxglove.

The most common question arises is that if all the herbal products are beneficial and are they capable replacing the modern medication that is with drugs and associated chemical substances? The answer is that herbal medicines are used generally for treating mild cases and are less effective in case of the serious diseases, this can also be considered on the basis of the longer duration required for the herbal medicine s to effect.