Page "Coal tar" Paragraph 9

Also known as liquor carbonis detergens ( LCD ), and liquor picis carbonis ( Latin: coal tar solution ) ( LPC ), it can be used in medicated shampoo, soap and ointment, as a treatment for dandruff and psoriasis, as well as being used to kill and repel head lice.

When used as a medication in the U. S., coal tar preparations are considered an OTC ( over-the-counter drug ) pharmaceutical and are subject to regulation by the United States Food and Drug Administration.

Name brands include Denorex, Balnetar, Psoriasin, Tegrin, T / Gel, and Neutar.

When used in the extemporaneous preparation of topical medications, it is supplied in the form of Coal Tar Topical Solution USP, which consists of a 20 % w / v solution of coal tar in alcohol, with an additional 5 % w / v of polysorbate 80 ; this must then be diluted in an ointment base such as petrolatum.