The 8 A’s — drugs that interact with warfarin
Antibiotics 
 - Most agents, but especially co-trimoxazole, 

metronidazole, macrolides and fluoroquinolones 
 - Rifampin 

Antifungals 
 - Fluconazole, miconazole 

Antidepressants 
 - Serotonergic agents (selective serotonin reuptake 

inhibitors) 

Antiplatelet agents 
 - Acetylsalicylic acid, clopidogrel, ticlopidine 

Amiodarone 
Anti-inflammatory agents 
 - All, including selective cyclooxygenase-2 inhibitors 

Acetaminophen 

Alternative remedies 
 - Gingko biloba, dong quai, fenugreek, chamomile 

St. John's wort 


#Warfarin #Coumadin #Drug #Interactions #Table #Mnemonic #8As #Pharmacology #Medications