The Difference Between Retin-A and Tretinoin - Verywell Health
https://www.verywellhealth.com/what-is-the-difference-between-retin-a-and-tretinoin-15653
Jan 20, 2022 · Other medications have similar-sounding names to tretinoin. This includes retinol, which is an over-the-counter version of Retin-A. Isotretinoin is a prescription medication, and like tretinoin, it's derived from vitamin A. However, isotretinoin is an oral medication to treat severe acne, and it's not interchangeable with tretinoin.
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