ABSTRACT
An appropriate pharmaceutical formulation enables optimal performance of active pharmaceutical ingredients. The major emphasis of pharmaceutical companies is to produce safe and effective drug-dosage form, so that the general public could be able to take their medicines in an appropriate and accurate dose. A drug dosage is often referred to as “pharmaceutical,” and it is defined as a form or means by which the drug substances are delivered to the site of action to produce the desired therapeutic effect. Pharmaceutical formulations or dosage forms can be classified according to the route of administration or according to the physical forms. A suspension is a dispersion system in which finely divided drug particles of 0.5 to 5.0 microns in size are dispersed uniformly in a suitable liquid vehicle in which the drug has minimum solubility. Semi-solid dosage forms are pharmaceutical preparations having semi-solid consistency and are applied topically on the skin or mucous membrane, providing a protective or a therapeutic effect.
