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Can pregnant or nursing dogs take Safeguard fenbendazole wormer?

Updated on September 23rd, 2025

Pet's info: Dog | Newfoundland | Female | unspayed | 2 years and 3 months old | 100 lbs

Can I use safeguard (fenbendazole) goat wormer on pregnant and nursing dogs? I

2 Answers

Most Helpful Answer

Laura Johnson VMD

Answered By Laura Johnson VMD

Veterinarian

Published on August 31st, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach!

According to Plumb's Veterinary Drug book Fendendazole is considered safe in pregnant dogs. There have been no studies on it's safety in dogs and cats but there were no adverse reactions in women or lab animals.

Have a good day!
Vote Icon4Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Answered By Laura Johnson VMD

    Veterinarian

    Published on August 23rd, 2018

    Hi, thanks for using Petco Pet Education Center, formerly Petcoach!

    Piperazine is rarely used in the US as there are more effective drugs now. For many drugs we do not have the studies to say 100% if they are safe in pregnant or nursing animals. Piperazine is considered Class A for pregnancy (according to Plumb Veterinary drug manual), which means it is PROBABLY safe, although specific studies may not have proved the safety of all drugs in dogs and cats, there are no reports of adverse effects in laboratory animals or women.

    Good luck

    Vote Icon

    1Pet Parents found this answer helpful

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