Pharmacology is that the science of the medicine system. It includes the information of history, source, organic chemistry and physiological impact, mechanism of action and therapeutic uses of drug. This means, it's connected with the interaction of the drug with biological system. The final materia medica is involves the aspects of sources of medication, route of administration of medication, absorption of medication and factors touching them, distribution, bio-transformation and excretion. It additionally involves the mechanism by that drug is acting with receptor, toxicity of drug and diagnosis & clinical analysis. The information can be published in our peer reviewed journal with impact factors and are calculated using citations not only from research articles but also review articles (which tend to receive more citations), editorials, letters, meeting abstracts, short communications, and case reports. The inclusion of these publications provides the opportunity for editors and publishers to manipulate the ratio used to calculate the impact factor and try to increase their number rapidly. Impact factor plays a major role for the particular journal. Journal with higher impact factor is considered to be more important than other ones.