Los Alamitos Clenbuterol Regulations

Los Alamitos clenbuterol regulations begin October 14.

September 2, 2011


Effective October 14, 2011, the authorization for the threshold level for clenbuterol will be suspended in Quarter Horse races at Los Alamitos. Clenbuterol will become similar to other drugs not specifically authorized by the California Horse Racing Board, if the lab detects clenbuterol at any level, it will be a violation. The Maddy lab has very sensitive testing for clenbuterol. The drug can be readily detected in urine between 100-200 picograms per milliliter of urine and 1-2 picograms per milliliter of blood. A picogram is .000000000001 grams or one-trillionth of a gram.

A 30 day withdrawl time should safely avoid any inadvertent positive, provided the clenbuterol is the FDA-approved Ventpulmin form of clenbuterol used at the standard therapeutic 5cc twice a day dose (0.8 micrograms per kilogram twice a day). Anyone using a non-FDA approved form of clenbuterol does so at his or her own risk. As always with withdrawl time recommendations, this recommendation does not constitute and is not a guarantee, warranty or assurance that the use of any of these therapeutic medications at the dosage listed will not result in a positive post-race test.

To be clear, clenbuterol is not “banned.” The drug may be used on the grounds upon the prescription of a CHRB-licensed veterinarian. Only the FDA approved form of clenbuterol, Ventipulmin Syrup, is allowed to be used to treat lower respiratory disease. Veterinarians prescribing Ventipulmin will be required to provide a specific diagnosis for its use on form CHRB-24 (Veterinary Confidentals). As a muscle builder, a horse on clenbuterol starts losing the muscle mass from the repartitioning effect within days without sustained administration.

The CHRB will continue to use out-of-competition testing to monitor compliance in conjunction with our existing post-race testing program. In addition, the Maddy lab is investigating alternative testing techniques for other beta-2 agonists and other growth-promoting drugs.
Trainers are cautioned to be particularly vigilant when horses have not been under their direct care for at least 30 days prior to racing. Trainers are required to insure the condition of all horses they race and will be held accountable for any violation.