The electronic version of Pharmaceutical Substances is updated on a regular basis and currently contains 2,495 active pharmaceutical ingredients (API's). Theses updates add new API's as they have been approved by the FDA, complete entries of the previous update with information (for example ATC codes) that has not been available by then, and adds new software features.

 

 

Information on forthcoming and all previous updates can be found on this page.

The 10th update took place in January, 2010.

The 9th update took place in May, 2009.

 

The 8th update took place in October, 2008.

The 7th update took place in June, 2007.

 

The 6th update took place in August, 2006.

 

The 5th update took place in January, 2006.

 

The 4th update took place in July, 2005.

 

The 3rd update took place in November, 2004.

 

The 2nd update took place in May, 2004.

 

The 1st update took place in November, 2003.

 

All API's (PDF - 54k) that have been published in the 4th edition.