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DOSAGE
The different formulations, strengths, and standard dosage ranges of topical and systemic retinoids currently available for use in dermatology are outlined in Table 126.5.
Table 126.5 Formulations of topical and systemic retinoids. Systemic retinoids are teratogenic and therefore contraindicated during pregnancy. Although topical retinoids have very low levels of systemic absorption, their use during pregnancy is not recommended and per the FDA, topical tazarotene and bexarotene are contraindicated during pregnancy. Topical tretinoin may be oxidized and inactivated by benzoyl peroxide, so it is recommended that these medications be applied at different times.