The pharmacy knowledge base built for the shift, not the boardroom. Dosing protocols, interaction checks, and contraindications — pulled from cited sources, not buried in PDFs.
Amiodarone inhibits CYP2C9 and CYP3A4, reducing warfarin metabolism. INR may increase 2–3× within 1–4 weeks.
Lexicomp. UpToDate. Package inserts. State formulary lists. Each one a different login, a different search syntax, a different moment of friction — while a patient waits.
Speed, access, and coverage — across every reference pharmacists actually use mid-shift.
Join 14,000+ pharmacists and students who verified their last interaction check here — not across six PDFs.
The features that matter when a patient is waiting and the stakes are real.
I pulled a warfarin-amiodarone interaction at 2:47 AM. Formulary had the INR adjustment protocol, mechanism, and a cited NEJM paper open in under four seconds. Lexicomp would have taken three logins.
Cramming for NAPLEX, I used Formulary for every drug interaction question in my review. The CRITICAL/MAJOR grading system maps exactly to how boards test it. Passed on first attempt.
Prior auth questions with twelve people in line. I need the formulary tier, the step therapy requirements, and the appeal criteria — all at once. Formulary has it. Nothing else does.
Formulary is free for the first 100 lookups. No credit card, no sales demo, no login wall.