Analysis is important in every product and it is vital in medicines as well given that our lives are affected by them. The assurance of quality is achieved through analysis of the drug product. Nowadays, the pharmaceutical dosage formed of combinational drugs are very much useful in multiple therapies, rather than the use of single drug formulation because of multiple action, fewer side effects and quicker relief. Thus, the manufacturers market more or more complex formulation containing several drugs in very similar chemical behavior.