Question

Which of the following is true about vitamin K ?

• A. Anticoagulant
• B. Prolong use of antimicrobial leads to deficiency
• C. Dietary allowance is 15-20 mg
• D. All of the above

Answer 1

The Correct Option is B

Vitamin K is essential for various physiological functions, primarily in the process of blood clotting. Here's an analysis of the given options related to vitamin K:

• Anticoagulant: Vitamin K is crucial for synthesizing clotting factors. It acts oppositely to anticoagulants, which prevent blood clotting. Therefore, the statement is false regarding vitamin K being an anticoagulant.
• Prolong use of antimicrobial leads to deficiency: The intestinal flora plays a significant role in synthesizing vitamin K. Prolonged use of antimicrobials can disrupt the gut microbiota, leading to potential deficiencies in vitamin K production. Thus, this statement is correct.
• Dietary allowance is 15-20 mg: This value is excessively high for vitamin K needs. The recommended dietary allowance of vitamin K is in micrograms, typically around 90-120 µg per day for adults. Hence, this statement is incorrect.
• All of the above: Since the first and third statements are incorrect, this option is not valid.

Therefore, the correct answer is: Prolong use of antimicrobial leads to deficiency.