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Dry Cow Therapy

Dryzen®

Internal teat sealant (ITS) containing bismuth subnitrate, used to prevent new mastitis infections in dairy cows and heifers over the dry period

  • Cattle
  • Antibiotic Free
    Antibiotic Free

Make drying off less demanding with Dryzen®, the internal teat sealant designed specifically for the high-volume needs of New Zealand dairy farmers, vets, and technicians. Formulated with bismuth subnitrate, Dryzen® protects against new mastitis infections throughout the dry period. It is pharmaceutically equivalent and proven non-inferior to the benchmark product, ensuring your herd remains protected without compromise.

The true Dryzen® difference lies in its superior ergonomics. Traditional syringes often lead to hand and forearm fatigue due to long plunger strokes; however, Dryzen® features a wider barrel and shorter stroke that keeps your hand in the "power zone." Independent testing reveals it requires 45% less force and 46% less time to empty than the benchmark product1. This significantly reduces musculoskeletal strain on the thumb and wrist, making it the ideal choice for treating large herds or heifers.

WHY CHOOSE DRYZEN®?

  • Proven Efficacy: Non-inferior to Teatseal® in preventing clinical mastitis under NZ trial conditions1.
  • Dual Tip Cap: Allows for partial insertion, improving precision and animal comfort for heifers or cows with shorter teats.
  • Sustainability Minded: Packaged in durable, recycled plastic buckets that withstand wet shed environments and are eligible for the Plasback recycling scheme.

WITHHOLDING PERIODS

  • Milk: 8 milkings (96 hours) after calving
  • Meat: Nil
     

PACK SIZES

Available in buckets of 100 syringes (to treat 25 cows).

Ask your vet for Dryzen® this dry-off season.
 

Download SDS

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How to use Dryzen®

Dryzen® is a Restricted Veterinary Medicine. Available only under Veterinary Authorisation. Registered pursuant to the ACVM Act 1997, No. A011639. See www.foodsafety.govt.nz for registration conditions.

1. Virbac data on file. 

Teatseal® is a registered trademark of Zoetis NZ Ltd. Restricted Veterinary Medicine. Available only under Veterinary Authorisation. Registered pursuant to the ACVM Act 1997, No. A007294.

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