An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic PT 141 FOR MEN: A NEW DRUG TO TREAT ERECTILE DYSFUNCTION AND LOW LIBIDO Urologist & Andrology Laboratory located in Great Neck, NY Bruce R Gilbert MD, PhD, PC PT 141 Figure 2 from Oral melanotic macule a case report. Semantic Scholar