PregBoost Plus 500 cow pack

PregBoost Plus 500 cow pack

500 cow treatment pack containing Cyclase, Gonasyn and Novormon eCG. 


  • Includes Gonasyn, Cyclase, Novormon eCG and Injector guns

  • Gonasyn uses the proven GnRH analogue and the only 2mL gonadorelin dose in New Zealand

  • Cyclase contains cloprostenol - proven prostaglandin for cattle

  • Cyclase can be used as the diluent for Novormon eCG in anoestrus treatment programs 

  • Cyclase is the only available prostaglandin approved by ACVM for reconstitution of Novormon eCG

  • Both Cyclase and Gonasyn are supplied in plastic 100mL bottles in this pack


  • Convenient pack to treat 500 non-cycling cows

  • Reliable and consistent reproductive outcomes

  • Dose surety via injector guns included, reducing likelihood of errors

  • Gonadorelin is proven in GPG programs

  • The reconstituted Cyclase and Novormon eCG mixture is stable for 21 days in the refrigerator, or 14 days if stored at room temperature (25°C)


Each 500 cow pack contains 1000 x 2mL doses of Gonasyn (GnRH), 500 x 2mL doses of Cyclase and 500 x 2mL doses of Novormon eCG (20,000iu) along with quality, branded, bottle mounted injector guns for each injection.

Pack Sizes

PregBoost Plus 500 cow pack contents:

20 x Gonasyn (GnRH) 100mL (50 dose) plastic vials 

1 x branded 2mL bottle mount injector and needle

15 x Cyclase (PG) 100mL (50 dose) plastic vials 

1 x branded 5mL bottle mount injector and needle

10 x Novormon eCG (20,000iu) glass vials (freeze-dried)


DIB-Synch, and DIB-Synch Plus programs

The PregBoost (GPG) program is generally administered with a progesterone insert such as a DIB-V or DIB-h.  
NZ research shows that the combined progesterone insert and PregBoost programs have the best chance of getting non-cycling dairy cows to ovulate and conceive promptly (via a DIB-Synch Plus Program), with resultant higher pregnancy rates. 
Another option is using PregBoost without a progesterone device (this program is also known as ovsynch or GPG) with non-cycling dairy cows.  This program is cheaper, but as pregnancy outcomes are lower it makes better economic sense to add a progesterone insert to the program each time.  This is because substantially more milk is produced from the higher proportion of cows in-calf earlier with DIB-Synch Plus.


See individual products for indications and program information. 


See individual products for dose and program information. 

Withholding times



Gonasyn, Cyclase and Novormon eCG are New Zealand restricted vet medicines. Please contact your veterinarian for advice on the best program for your herd.