Uptodate Lexidrug
Lexicomp
UpToDate
Wolters Kluwer Health | UpToDate
PharmaBook Pakistan - uptodate
marwatsoft technologies
Drugs.com Medication Guide
Drugs.com
Medscape
WebMD, LLC
MDCalc Medical Calculator
MD Aware, LLC
WebMD: Symptom Checker
Harrison's Manual of Medicine
Unbound Medicine, Inc
Calculate by QxMD
QxMD Medical Software Inc.