Being truly prepared means having the only print compendium of evidence-based drug information at hand.

Written and published by pharmacists and reviewed by over 500 experts, AHFS DI is the most comprehensive evidence-based source of drug information complete with therapeutic guidelines and off-label uses. The only print compendium designated by the US Congress, AHFS DI is also the only reference published by a non-profit scientific association--ensuring it is the most authoritative and best-selling reference trusted by pharmacists for more than 50 years.