MSD Manual

Please confirm that you are a health care professional

honeypot link
Professional Version

Parasite Control During Pregnancy in Horses

By

Patricia L. Sertich

, VMD, DACT, Department of Clinical Studies-New Bolton Center, School of Veterinary Medicine, University of Pennsylvania

Reviewed/Revised Feb 2021 | Modified Oct 2022

Most anthelmintics are safe for use throughout pregnancy, but precautions and contraindications on package inserts should be heeded. In general, anthelmintics Anthelmintics should not be administered to mares during the first 60 days of gestation (organogenesis). Parasite control programs should be tailored to meet the particular farm needs. Also see Gastrointestinal Parasites of Horses Gastrointestinal Parasites of Horses . Pregnant mares should be administered ivermectin or a benzimidazole 1–3 days before foaling to prevent lactogenic transmission of Strongyloides westeri, which can cause diarrhea in young foals.

For More Information

quiz link

Test your knowledge

Take a Quiz!
iOS ANDROID
iOS ANDROID
iOS ANDROID
TOP