Impact Factor

Impact Factor: The impact factor (IF) of an academic journal is a measure reflecting the average number of citations to recent articles published in the journal. It is frequently used as a proxy for the relative importance of a journal within its field, with journals with higher impact factors deemed to be more important than those with lower ones. The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information. Impact factors are calculated yearly for those journals that are indexed in the Journal Citation Reports.

Calculation of Impact Factor:
In a given year, the impact factor of a journal is the average number of citations received per paper published in that journal during the two preceding years. For example, if a journal has an impact factor of 3 in 2008, then its papers published in 2006 and 2007 received 3 citations each on average in 2008. The 2008 impact factor of a journal would be calculated as follows:

A = the number of times that articles published in 2006 and 2007 were cited by indexed journals during 2008.

B = the total number of "citable items" published by that journal in 2006 and 2007. ("Citable items" are usually articles, reviews, proceedings, or notes; not editorials or letters to the editor.)

2008 impact factor = A/B.

(Note that 2008 impact factors are actually published in 2009; they cannot be calculated until all of the 2008 publications have been processed by the indexing agency.)
New journals, which are indexed from their first published issue, will receive an impact factor after two years of indexing; in this case, the citations to the year prior to Volume 1, and the number of articles published in the year prior to Volume 1 are known zero values. Journals that are indexed starting with a volume other than the first volume will not get an impact factor until they have been indexed for three years. Annuals and other irregular publications sometimes publish no items in a particular year, affecting the count. The impact factor relates to a specific time period; it is possible to calculate it for any desired period, and the Journal Citation Reports (JCR) also includes a 5-year impact factor.The JCR shows rankings of journals by impact factor, if desired by discipline, such as organic chemistry or psychiatry.
Importance in Article Publishing: Journal Impact factor is an important factor to be considered during publishing an article. The author should consider this as a major criteria. Journals are rated according to this impact factor.
The following are the Pharmacy journals with their impact factors:

22.524 PHARMACOLOGICAL REVIEWS

17.013 TRENDS IN PHARMACOLOGICAL SCIENCES

11.959 ANNUAL REVIEW OF PHARMACOLOGY AND TOXICOLOGY

 9.667 REVIEWS OF PHYSIOLOGY BIOCHEMISTRY AND PHARMACOLOGY

 5.927 MOLECULAR PHARMACOLOGY

 4.695 BRITISH JOURNAL OF PHARMACOLOGY

 4.367 PHARMACOGENETICS

 4.327 DRUGS

 3.818 CLINICAL PHARMACOLOGY & THERAPEUTICS

 3.800 PHARMACOLOGY & THERAPEUTICS

 3.688 CRITICAL REVIEWS IN THERAPEUTIC DRUG CARRIER SYSTEMS

 3.496 JOURNAL OF CLINICAL PSYCHOPHARMACOLOGY

 3.323 JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS

 3.308 DRUG METABOLISM REVIEWS

 3.180 ANTIMICROBIAL AGENTS AND CHEMOTHERAPY

 2.813 NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY

 2.780 NEUROPSYCHOPHARMACOLOGY

 2.677 EUROPEAN JOURNAL OF PHARMACOLOGY

 2.634 CLINICAL PHARMACOKINETICS

 2.549 PSYCHOPHARMACOLOGY

 2.500 LIFE SCIENCES

 2.490 TOXICOLOGY AND APPLIED PHARMACOLOGY

 2.424 NEUROPHARMACOLOGY

 2.279 ANNUAL REPORTS IN MEDICINAL CHEMISTRY

 2.263 BIOCHEMICAL PHARMACOLOGY

 2.228 JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY

 2.110 ALIMENTARY PHARMACOLOGY & THERAPEUTICS

 2.071 CLINICAL NEUROPHARMACOLOGY

 1.958 ANTI-CANCER DRUG DESIGN

 1.933 EUROPEAN NEUROPSYCHOPHARMACOLOGY

 1.922 BRITISH JOURNAL OF CLINICAL PHARMACOLOGY

 1.914 ADVANCED DRUG DELIVERY REVIEWS

 1.901 ANTIVIRAL CHEMISTRY & CHEMOTHERAPY

 1.838 PHARMACEUTICAL RESEARCH

 1.825 JOURNAL OF AUTONOMIC PHARMACOLOGY

 1.818 BEHAVIOURAL PHARMACOLOGY

 1.699 DRUG METABOLISM AND DISPOSITION

 1.680 JOURNAL OF CARDIOVASCULAR PHARMACOLOGY

 1.600 PHARMACOPSYCHIATRIA

 1.561 CHIRALITY

 1.535 DRUG DEVELOPMENT RESEARCH

 1.526 JOURNAL OF CONTROLLED RELEASE

 1.510 NEUROTOXICOLOGY

 1.507 QUANTITATIVE STRUCTURE-ACTIVITY RELATIONSHIPS

 1.498 JOURNAL OF NATURAL PRODUCTS-LLOYDIA

 1.481 CANCER CHEMOTHERAPY AND PHARMACOLOGY

 1.450 PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR

 1.439 PSYCHOPHARMACOLOGY BULLETIN

 1.408 THERAPEUTIC DRUG MONITORING

 1.397 TOXICON

 1.382 FUNDAMENTAL & CLINICAL PHARMACOLOGY

 1.373 ALCOHOL

 1.364 INTERNATIONAL CLINICAL PSYCHOPHARMACOLOGY

 1.344 CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY

 1.310 JOURNAL OF PHARMACEUTICAL SCIENCES

 1.308 JOURNAL OF PSYCHOPHARMACOLOGY

 1.286 IMMUNOPHARMACOLOGY

 1.284 JOURNAL OF PHARMACOKINETICS AND BIOPHARMACEUTICS

 1.274 TOXICOLOGY

 1.258 ANTI-CANCER DRUGS

 1.234 REGULATORY TOXICOLOGY AND PHARMACOLOGY

 1.195 JOURNAL OF ANTIBIOTICS

 1.184 CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY

 1.170 INTERNATIONAL JOURNAL OF IMMUNOPHARMACOLOGY

 1.149 PULMONARY PHARMACOLOGY

 1.141 PROGRESS IN NEURO-PSYCHOPHARMACOLOGY

 1.133 XENOBIOTICA

 1.099 CHEMICAL & PHARMACEUTICAL BULLETIN

 1.094 DRUG SAFETY

 1.080 DRUGS & AGING

 1.078 PHARMACOLOGY & TOXICOLOGY

 1.050 INTERNATIONAL JOURNAL OF PHARMACEUTICS

 1.044 PLANTA MEDICA

 1.038 EUROPEAN JOURNAL OF CLINICAL PHARMACOLOGY

 1.019 PHARMACOLOGY

This information is pretty important for authors and students in publishing articles and writing reviews.