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Aquamephyton (phytonadione) Disease Interactions

There is 1 disease interaction with Aquamephyton (phytonadione):


Phytonadione (vit. K) (Includes Aquamephyton) ↔ hepatobiliary dysfunction

Moderate Potential Hazard, Moderate plausibility. Applies to: Liver Disease, Biliary Obstruction

Phytonadione is fat soluble and requires bile for adequate intestinal absorption. Biliary dysfunction decreases the absorption of phytonadione. Phytonadione is metabolized by the liver and excreted in bile and urine. Hepatic and/or biliary impairment can alter the metabolic and therapeutic activity of phytonadione. Phytonadione will not correct hypoprothrombinemia due to hepatocellular dysfunction or damage and administration of excessive phytonadione may worsen hepatic function.


  1. Barkhan P, Shearer MJ "Metabolism of vitamin K1 (phylloquinone) in man." Proc R Soc Med 70 (1977): 93-6
  2. "Product Information. Mephyton (phytonadione)." Merck & Co, Inc, West Point, PA.
  3. Ballard HS, Marcus AJ "Decompensated portal cirrhosis. Effects of large doses of phytonadione." Arch Intern Med 117 (1966): 182-6
  4. Shearer MJ, McBurney A, Barkhan P "Studies on the absorption and metabolism of phylloquinone (vitamin K1) in man." Vitam Horm 32 (1974): 513-42
  5. "Product Information. Vitamin K Injection (phytonadione)." Abbott Pharmaceutical, Abbott Park, IL.
View all 5 references

Aquamephyton (phytonadione) drug interactions

There are 14 drug interactions with Aquamephyton (phytonadione)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.