Question

fill in the blank question
certain acne medications, such as isotretinoin or tretinoin topical, containing high levels of vitamin
should not be prescribed during pregnancy due to the increased risk for harm to the fetus.
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Explanation:

Isotretinoin and tretinoin are related to vitamin A derivatives. High levels of vitamin A in medications like these can pose risks to the fetus during pregnancy, so the blank should be filled with "A".

Answer:

A (vitamin A)