Melanosis coli is dark brown black pigmentation of colorectal mucosa associated with chronic use of laxatives containing anthraquinone. Examples of such laxatives include senna and rhubarb derivatives. Clinical Importance: There is no association Multifocal amelanotic and melanotic melanomas of the oral cavity BMJ Case Reports Citalopram Induced Oral Melanotic Macules in a Female Patient and a Review of the Literature Cureus Pigmented Lesions of the Oral Mucosa Pocket Dentistry