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Suggested worming programs

Worming is suggested every 8 weeks for Eqvalan or at least every 12 weeks with Equest - see table below. Equimax or Equest Pramox should be given at least every 12 months to remove any tapeworm. This regime does not remove all worms but aims to reduce the worm egg count to well below 500 eggs per gram (epg) and with good pasture management to reduce horse’s worm burden to very low levels over a period of time. It is probably not possible or desirable to remove all worms from a horse as levels of immunity will drop to potentially dangerous levels so that if the horse is exposed to worms it has very little resistance and is far more susceptible. Young, old and ill horses, ponies and donkeys are more susceptible to worm infestation.

Worming is an essential part of horse care

Equest or Eqvalan at the standard dose level removes small and large redworm in the gut and when migrating in the body (where relevant) also lungworm and bots however no wormer removes all migrating worms.

Clients should not rely on Panacur, or other wormers belonging to the bendazole group, exclusively as there is widespread resistance to these wormers. Some studies put the resistance to fenbendazole (active ingredient of Panacur), given as a single dose, at 80% and pyrantal embolate (active ingredient of Strongid P) at 40% in some areas. Panacur Guard is recommended as part of some programs, as a 5 day course, as it licensed and often effective in controlling encysted cyathasomes (immature small strongyles in the wall of the large intestine).

Resistance is rare to Equest, Eqvalan, Equimax however recently there has been resistance reported for example in Parascaris Equorum in foals. Strongid-P only kills worms in the gut and requires to be given at double the normal dose rate to remove tapeworm it is not always fully active against all types of tapeworm.

To reduce the chance of resistance to antelmintics developing it is important to reduce the use of wormers to the minimum by carrying out regular worm egg counts on dung at least 8 weeks after the last worming (to allow enough time for mature adults to develop and produce eggs).

Good pasture management is also essential such as picking up all dung regularly and where possible rotational grazing with other species such as sheep. Where worm counts are negative there is usually no point in worming although there are exceptions to this when for example tapeworm or cyathostomiasis is suspected. There is an ELISA blood test for tapeworm infestation. Please phone us for specific advice or to arrange worm egg counts.

New equines with an unknown worming history should either receive Equest or Equest Pramox or a Panacur Guard 5 day treatment or Equimax on arrival and should only be released on to the pasture 2 days after the start of the course of treatment. When turning out on to "horse-clean" pasture (not grazed by horses for 2 years), we suggest that you treat horses with Equimax or Equest Pramox to remove any tapeworm so as to maintain pasture "worm free" status.. Equest should not be used in foals under the age of 4 months, or initially in very thin ponies or equines with very high worm burdens. A Panacur Guard 5 day course should be used prior to entering the above program when treating debilitated ponies or those with a heavy worm burden. Equest should be used with caution in thin animals. The recommended dose should not be exceeded.

See below:

(1) Recommended program

(2) Alternative program

(1) Recommended program (using Eqvalan)

MONTH DAY WORMER ALTERNATIVE REASON
JANUARY 1 EQVALAN EQVALAN BOTS, ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
FEBRUARY
MARCH 1 EQVALAN EQVALAN or
EQUIMAX
ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM (+ Tapeworm with EQUIMAX)
APRIL
MAY 1 EQVALAN EQVALAN ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
JUNE
JULY 1 EQVALAN EQVALAN ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
AUGUST
SEPTEMBER 1 EQVALAN + EQUITAPE EQUIMAX TAPEWORM. ADULT ROUNDWORM. EQUIMAX - as Eqvalan plus all Tapeworms
OCTOBER
NOVEMBER 1 EQVALAN EQVALAN BOTS, ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
DECEMBER 1 PANACUR GUARD
for 5 Days
ENCYSTED SMALL REDWORM (CYATHOSTOMES)/MIGRATING LARGE REDWORM

(2) Alternative program (using Equest)

MONTH DAY WORMER ALTERNATIVE REASON
JANUARY 1 EQUEST EQUEST BOTS, ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
FEBRUARY
MARCH
APRIL 1 EQUEST EQUEST BOTS, ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
MAY
JUNE
JULY 1 EQUEST EQUEST ADULT AND IMMATURE ROUNDWORM, REDWORM AND LUNGWORM
AUGUST
SEPTEMBER
OCTOBER 1 EQUEST PRAMOX EQUIMAX BOTS, ADULT AND IMMATURE ROUNDWORM, REDWORM, LUNGWORM & TAPEWORM
NOVEMBER
DECEMBER 1 PANACUR GUARD for 5 Days ENCYSTED SMALL REDWORM (CYATHOSTOMES) - MIGRATING LARGE REDWORM
Animed Veterinary Group is part of CVS (UK) Limited, a company which owns over 300 veterinary practices in the UK. Company Registration Number 03777473. Registered Office CVS House, Owen Road, Diss, Norfolk, IP22 4ER