Medicines are used to prevent and illness. Depending upon their site of action, efficacy of drug and safety the drugs are administered through a different method like oral, parenteral, Intradermal and Transdermal etc. While administering a Pharmaceutical product we have to consider the possibility of side effects and dangerous reactions too. The Dosage of the drug has to be carefully prepared and administered. In US, it has been estimated that 80 per cent of active pharmaceutical ingredients and 40 per cent of the final drug products are imported from other countries. Medicine slant and bolster significance have been surveyed by taking a gander at the self-association of no less than two drugs open under various trial conditions, including choice procedure, dynamic extent fortress timetables, and chain stronghold logbooks.