# 2026-12680: New International Rules Target Sheep Parasite Drugs

2026-12680, International Cooperation on Harmonisation of Technical Requirements for Registration of Veterinary Medicinal Products; Effectiveness of Anthelmintics: Specific Recommendations for Ovines; Guidance for Industry; Availability, is a Federal Register notice from Health and Human Services Department, Food and Drug Administration published 2026-06-24, effective 2026-06-24; PRIA reads it as touching household money (as of 2026-07-01).

- Canonical: https://policyrisk.com/federal-register/2026-12680
- As of: 2026-07-01
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-12680
- Title: International Cooperation on Harmonisation of Technical Requirements for Registration of Veterinary Medicinal Products; Effectiveness of Anthelmintics: Specific Recommendations for Ovines; Guidance for Industry; Availability
- Type: Notice
- Agencies: Health and Human Services Department; Food and Drug Administration
- Citation: 91 FR 38000
- Published: 2026-06-24
- Effective: 2026-06-24
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-07-01

## In one line

New International Rules Target Sheep Parasite Drugs

## Summary

The FDA just released new guidance to help drug makers test worm-killing medicines for sheep in a way that’s accepted worldwide. This makes it easier and faster for companies to get their products approved, saving time and money. Sheep farmers, vets, and drug companies should pay attention to these updated rules starting June 24, 2026.

## Abstract

The Food and Drug Administration (FDA or Agency) is announcing the availability of a final guidance for industry (GFI) #96 entitled "Effectiveness of Anthelmintics: Specific Recommendations for Ovines." This guidance has been developed for veterinary use by the International Cooperation on Harmonisation of Technical Requirements for Registration of Veterinary Medicinal Products (VICH). The objective of this guidance is to provide study design recommendations specific to ovines that will facilitate the universal acceptance of the generated effectiveness data to fulfill the national/regional requirements for anthelmintic drugs in animal species.

## Effects PRIA read

- Harmonized Testing for Sheep Dewormers: benefit, medium. The FDA published final guidance (GFI #96; VICH GL13) on June 24, 2026 that gives study design recommendations specific to ovines (sheep). The guidance is intended to facilitate the universal acceptance of generated effectiveness data so it can fulfill national and regional requirements for anthelm…
- Guidance Allows Alternative Approaches: benefit, low. The FDA states the guidance represents its current thinking and is not binding. You may use an alternative approach if it satisfies the requirements of the applicable statutes and regulations.

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## Sources
- [2026-12680 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/24/2026-12680/international-cooperation-on-harmonisation-of-technical-requirements-for-registration-of-veterinary)
- [2026-12680 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-24/pdf/2026-12680.pdf)

## Related
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- [Next: 2026-12681, International Cooperation on Harmonisation of Technical Requirements for Regist…](https://policyrisk.com/federal-register/2026-12681)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-12680 (as of 2026-07-01).