CONCOMITANT TOPICAL PRODUCTS WITH A STRONG SKIN DRYING EFFECT, PRODUCTS WITH HIGH CONCENTRATIONS OF ALCOHOL, ASTRINGENTS, SPICES OR LIME, MEDICATED SOAPS OR SHAMPOOS, PERMANENT WAVE SOLUTIONS, ELECTROLYSIS, HAIR DEPILATORIES OR WAXES, OR OTHER PREPARATIONS THAT MIGHT DRY OR IRRITATE THE SKIN SHOULD BE USED WITH CAUTION IN PATIENTS BEING TREATED WITH MEQUINOL SOLUTION BECAUSE THEY MAY INCREASE IRRITATION.
SHOULD NOT BE ADMINISTERED IF THE PATIENT IS ALSO TAKING DRUGS KNOWN TO BE PHOTOSENSITIZERS (E.G., THIAZIDES, TETRACYCLINES, FLUOROQUINOLONES, PHENOTHIAZINES, SULFONAMIDES) BECAUSE OF THE POSSIBILITY OF AUGMENTED PHOTOTOXICITY.