Vitamin K

Also indexed as: Phylloquinone, Phytonadione

Drug Interactions Safety Check

Certain medications interact with vitamin K: Some interactions may increase the need for vitamin K (Beneficial), other interactions may be negative (Avoid) and indicate vitamin K should not be taken without first speaking with your physician or pharmacist, others may require further explanation (Check). Refer to the individual drug article for specific details about an interaction.

Note: the following list only includes the generic or class name of a medication—to find a specific brand name, use the Safetychecker index.

Aminoglycoside Antibiotics Beneficial

Amoxicillin Beneficial

Ampicillin Beneficial

Antibiotics Beneficial

Anticonvulsants Beneficial

Azithromycin Beneficial

Bile Acid Sequestrants Beneficial

Cephalosporins Beneficial

Chlorhexidine Beneficial

Ciprofloxacin Beneficial

Clarithromycin Beneficial

Clindamycin Oral Beneficial

Clindamycin Topical Beneficial

Colestipol Beneficial

Cycloserine Beneficial

Dapsone Beneficial

Dicloxacillin Beneficial

Doxycycline Beneficial

Erythromycin Beneficial

Gabapentin Beneficial

Gentamicin Beneficial

Isoniazid Beneficial

Levofloxacin Beneficial

Loracarbef Beneficial

Macrolides Beneficial

Mineral Oil Beneficial

Minocycline Beneficial

Neomycin Beneficial

Nitrofurantoin Beneficial

Ofloxacin Check

Oral Corticosteroids Check

Penicillin V Beneficial

Penicillins Beneficial

Phenobarbital Beneficial

Quinolones Beneficial

Sulfamethoxazole Beneficial

Sulfasalazine Beneficial

Sulfonamides Beneficial

Tetracycline Beneficial

Tetracyclines Beneficial

Tobramycin Beneficial

Trimethoprim Beneficial

Trimethoprim/Sulfamethoxazole Beneficial

Valproic Acid Beneficial

Warfarin Avoid