Inspections, Compliance, Enforcement, and Criminal Investigations

CPG Sec. 654.100 Dimethyl Sulfoxide (DMSO) for Animal Use


DMSO is a by-product of the paper industry and is able to carry some drugs rapidly through the skin. Industrial grade DMSO is widely available for various non-medical uses such as paint remover and antifreeze. The *Center for* Veterinary Medicine has received inquiries concerning the status of DMSO for use in animals, probably prompted by the approval of DMSO for human use in April 1978. The product is a new animal drug with approved uses only in horses and dogs (See 21 CFR 524.660, 524.981d and 524.981e).


DMSO used for any veterinary purposes other than approved uses reflected in the CFR is a new animal drug without an approved new animal drug

application (NADA). As such, it is adulterated under Section 501(a)(5) of the Act.

NOTE: At least one state (Florida, Bill No. S. 699) has passed legislation (1978) that prohibits interference with the use of DMSO.

*Material between asterisks is new or revised.*

Issued: 10/1/80
Revised: 3/95

Page Last Updated: 03/20/2015
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