clipped from: acnefree123.com Vitamin A Derivatives: Molecules such as isotretinoin, tretinoin, tazarotene, etc that are very potent for acne treatment must be totally avoided during, before, and after pregnancy.
Sulfacetamide/sulfur combinations: as with benzoyl peroxide products, these have been used safely for many years. Combinations of sulfacetamide and sulfur are contained in such products as Rosula, Rosac, Rosanil, Nicosyn, and Novacet.
Tetracycline: Tetracycline and its derivatives such as doxycycline may affect the bone growth and discolor teeth of the fetus, and the breast-fed child.