|Drug is a chemical substance that is used to prevent, treat and cure a particular disease. The effect of a drug is always depended on the dosage and duration. In excess the drug can lead to toxicity. The exact mechanism of a drug is indeed required to know the toxicity of a drug.
High-impact journals are those considered to be highly influential in their respective fields. The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.