What’s a “solid” deworming protocol?

Short answer

Strategic deworming based on fecal egg counts (FEC), not fixed-interval dosing.

The AAEP recommends using FEC testing to classify horses as low, moderate, or high shedders, then tailoring treatment accordingly — rather than automatically deworming every 6–8 weeks (AAEP).

Most adult horses require deworming only 1–2 times per year when managed strategically.

Real-Life Example

Two horses share a pasture.

One consistently tests low on fecal egg counts.
The other tests high.

Blanket deworming treats them the same — even though their parasite burdens are different.

Strategic testing allows treatment where it’s actually needed.

It Depends

Parasite management varies based on:

• Region and climate
• Barn population density
• Age (young horses often shed more)
• Immune status
• Pasture management practices
• Dewormer resistance patterns

Herbal products may be part of some programs, but efficacy varies and should not completely replace evidence-based parasite control without veterinary guidance.

When to Seek Guidance

If you notice:

• Weight loss
• Rough hair coat
• Diarrhea
• Recurrent colic
• Poor body condition

Consult your veterinarian and perform fecal testing.

Strategic does not mean absent.

Sources:
American Association of Equine Practitioners (AAEP) Parasite Control Guidelines