Question

1. which of the following is a synthetic derivative of vitamin a that is used to treat severe cystic acne? a ○ accutane® b ○ differin® c ○ retin - a® d ○ tazorac®

Explanation:

Accutane (isotretinoin) is a synthetic derivative of vitamin A used for severe cystic acne. Differin (adapalene), Retin - A (tretinoin), and Tazorac (tazarotene) are also retinoids but Accutane is well - known for treating severe cases.

Answer:

A. Accutane®