Drug Interaction Checkers
Check for interactions between medications, herbals, vitamins, and alcohol. Listed tools are free to use and with few exceptions do not require registration. Always ask your doctor or pharmacist about possible interactions before starting a new medication.
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Solid offering that is made nearly unusable by ads interspersed with interactions.drugs.com -
Unfortunately behind a free registration wall.epocrates.com - Registration Required -
Easy-to-use and well-designed; interactions update instantly with each regimen edit.reference.medscape.com -
Subscription Services
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Provides drug data for health system applications and clinical decision support.elsevier.com -
Drug reference including dosing, clinical decision support, and comparative drug tables.wolterskluwer.com - Subscription
Additional Resources
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Information on factors that can influence interaction severity and types of interactions.healthline.com -
Learn about different types of interactions and common interaction terms.fda.gov -
Academic assessment of interaction checkers regarding accuracy and comprehensiveness.ncbi.nlm.nih.gov