Medical Dictionary
isotretinoin
noun iso·tret·i·noin \ˌī-sō-ˈtret-ə-ˌnȯin\
Medical Definition of ISOTRETINOIN
: a cis isomer of retinoic acid that is a synthetic derivative of vitamin A, that inhibits sebaceous gland function and keratinization, and that is administered in the treatment of severe inflammatory acne but is contraindicated in pregnancy because of its implication as a cause of birth defects—see accutane
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