Question: which fat soluble vitamin has no established ul?
Answer: Dietary Reference Intake and Food Sources for Vitamin K The AI of vitamin K for adult females is 90 micrograms per day, and for males it is 120 micrograms per day. A UL for vitamin K has not been set. The Food and Nutrition Board (FNB) has not established an UL for vitamin K because it has a low potential for toxicity.