the letters .net, drug resource, cant remember

Was at my doctor today, he had this huge book, it listed all the drugs there are, what they are, abbreviations, common name, medical name, dosage suggestions, side effects etc…

There was a url for it, it was ***.net

Three letters then .net

The three letters were a acronym for the name of the resource book, anyone know? I forgot :frowning:

pdr.net - Physician’s Desk Reference.