CycleGuard 500 Receives Medicated Feed Combination Approvals

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This information was provided by Huvepharma.  

CycleGuard, a melengestrol acetate feed additive used for increased rate of weight gain, improved feed efficiency and suppression of estrus (heat) in heifers, has received U.S. Food & Drug Administration approval for combination use with other drug feed additive products in the manufacture of Type B and C medicated feeds.

Available as a Type A liquid medicated article from Huvepharma, CycleGuard 500 must be mixed with other feeds when fed, and should be fed according to label directions. The combination approvals, or Blue Bird labels, allow CycleGuard 500 to also be used with other feed additives commonly fed to feedlot cattle to enhance rate of gain, feed efficiency, promote carcass leanness, and control coccidiosis, including monensin, tylosin and ractopamine hydrochloride and more.

The CycleGuard 500 combinations receiving FDA approval include CycleGuard 500 and Monovet 90; CycleGuard, with Monovet 90 and Optigrid 45; CycleGuard, with Monovet 90 and Tylovet 100; CycleGuard with Monovet 90, Tylovet 100 and Optigrid 45, as well as CycleGuard with Optigrid 45 and Monovet 90 plus and CycleGuard with Optigrid 45, Monovet 90 and Tylovet 100.

Huvepharma has offered animal health products for poultry, swine and cattle in the U.S. since 2005. In addition to CycleGuard 500, over the past 18 months the company has received FDA approvals for Monovet 90, the first available bio-equivalent monensin, and Optigrid 45, comprised of the active ingredient ractopamine hydrochloride.

In January 2021, Huvepharma also received FDA approval for four Blue Bird label combinations with Optigrid 45, a ractopamine hydrochloride Type A medicated article used increased rate of weight gain, improved feed efficiency and increased carcass leanness in cattle fed in confinement for slaughter. More information is available at



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