Parnell Launches First FDA Approved Repro Hormone for Synchronizing Estrous Cycles

US – Parnell has launched SYNCHRONIZATION PACK™, the first reproductive hormone ever to be approved by the FDA to synchronize estrous cycles in lactating dairy cows and beef cows.
calendar icon 18 February 2013
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SYNCHRONIZATION PACK™ incorporates timed injections of GONAbreed® (gonadorelin acetate) and estroPLAN® (cloprostenol sodium) to allow for fixed time artificial insemination (FTAI) in commonly used cattle breeding programs. GONAbreed® has also been FDA-approved for the treatment of ovarian follicular cysts in dairy cattle.

“We are excited to partner with US veterinarians and producers in using proactive breeding Parnell's Synchronization Packsystems to help improve production outcomes,” said Robert Joseph, CEO of Parnell. “With more than 50 years of innovation experience, we understand the real-time, low-risk needs that producers in partnership with veterinarians have around increasing their herd’s reproductive productivity.”

With the approval of GONAbreed® for use in reproductive synchronization programs, veterinarians and producers no longer have to use drugs and protocols that are not FDA-approved for reproduction purposes. They can safely and effectively use GONAbreed® in combination with estroPLAN® in breeding programs including “ovsynch” and “cosynch”.

FDA’s approval of GONAbreed® was based, in part, on two multi-site, placebo-controlled studies evaluating pregnancy rates in lactating dairy cows and beef cows. Both studies demonstrated a significant increase in pregnancy rates versus placebo. No significant adverse effects from GONAbreed® or estroPLAN® were noted in the treated cows.

“Parnell recognizes that the industry is becoming more regulated, more competitive and more demanding,” continued Joseph. “Veterinarians and producers deserve a partner that puts them in a better position to reduce risk and increase profits.”


Parnell is also developing a unique digital tool – mySYNCH™, which is designed to help veterinarians and producers measure reproductive performance and implement improvement plans for optimizing synchronization and conception. mySYNCH™ will also provide educational resources designed specifically for effective training in the field including Spanish language modules.

To learn more about SYNCHRONIZATION PACK, click here.

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