retinoic acid (ret-i-no´ik)
Vitamin A1 acid;retinaldehyde in which the terminal -CHO has been oxidized to a -COOH; used topically in the treatment of acne; plays an important role in growth and differentiation.vitamin A1 acid;
13-cis-r.a. the retinoid most used in the United States to treat acne; it works by reducing sebum secretion. Use in pregnancy is contraindicated because of teratogenicity.
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