Young Horse Deworming Protocols Discussed by Readers

More than 460 readers of responded to a poll asking, "How often do you deworm your young horses?"


results of poll on deworming young horses

Results were as follows: 

  • Six times per year 32.83% (153)
  • Four times per year 21.67% (101)
  • Other 16.95% (79)
  • As directed by my veterinarian 15.45% (72)
  • Twice per year 6.87% (32)
  • Depends on fecal egg count test results 6.22% (29)

Readers shared what they keep in their tack room in the comments below.

Poll sponsored by Intervet/Schering-Plough Animal Health.

Results of weekly polls from are published in The Horse Health E-Newsletter. Published every week, this e-newsletter offers news on diseases, veterinary research, health events, and in-depth articles on common equine health conditions and what you can do to recognize, avoid, or treat them. Sign up for our e-newsletters using the form above or on our e-newsletter page.  

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  • don't have young horses
  • Daily dewormer by Pfizer
  • 8-9 times per year
  • it varies depending on the efficacy period of the wormers being used in that year.
  • Rotating dewormer type every 8 weeks
  • depends on the growth rate of the worms in the horse. some worms dont develope until certain ages.
  • only as needed
  • once a month for the first year
  • the farm takes care of it
  • more than 6 times
  • once per month until 12 moths of age, then every 8 weeks.
  • depends on chemical used
  • Blood Tests
  • daily wormer with ivermectin or Quest twice a year
  • every 6 weeks
  • try to wean horses under 18 months of age once a month
  • every 30 days
  • When we had young horses, we wormed 4X/yr. But we always had them in claen stalls, and daily cleaned
  • depends on manure test
  • we have a boarding barn with alot of show horses in and out
  • We use a daily wormer, purge worming twice a year
  • Depends on his age. It was monthly but now bi-monthly
  • same as my other horses
  • No young horses at this time - average age of my herd is 15 yrs.
  • We deworm young horses monthly until two years old
  • Developing young horses need deworming as much as adult horses.
  • once a month while very young
  • Once a month until they're eating on their own and can eat daily dewormer
  • monthly
  • once a month starting at 2 months to 1 year. as told by my vet.
  • monthly double-dose with ivermectin
  • every 30 days
  • Younger horses are done more than usual rate.
  • My youngest is 9
  • Use a daily wormer and then I purge worm 2 times per year.
  • We use the every third month cycle. It seems to works for our horses.
  • in addition with Strongid C2X daily
  • Use a daily wormer
  • once a month
  • once month first 3months
  • daily owrmers up resistance
  • with daily dewormer
  • Plus use Continuex 2X daily feed through
  • They get wormed like every normal horse. Every month, rather be safe than sorry
  • I rotate dewormers, but who has the funds to test fecal egg counts on their multi-horse farms?
  • 1 per week for first 3 months then once a month until they are 2 years old. Then follow labeling
  • monthly until age 1 and then every other month after that
  • foals-monthly from 1 month on, yrg up 6x/yr
  • sorry no young horses
  • Daily with Strongid 2X
  • foals are dewormed monthly till they are yearlings.
  • I use daily wormers.
  • monthly the first year
  • We fed our foals feed through wormers every day
  • every 6 weeks
  • monthly
  • once a month
  • with ivermectin
  • once weaned, every month until they reach 8 months, then every three months afterwards
  • once a month till yearling then every 2 months
  • 1 cup of diatamatious earth daily
  • 8 -10 times during first year, six times during 2nd year.
  • paste every month or paste twice yearly with daily worming program
  • or based on fecal egg count
  • monthly thru 18 months
  • monthly
  • six or more times a year depending on environment and appearance.
  • monthly
  • Monthly
  • Monthly
  • once a month
  • Monthly with rotation wormers.
  • don't have young ones
  • every six to 8 weeks
  • Up to a yearling I worm them monthly per veterinarian after yearling
  • Every month at 30 days old for one year
  • once a month until it is a year old
  • every 4 weeks
  • Once a month for the first 6 months. Then every 8 weeks.
  • I deworm foals monthly starting at one month of age up to 12 months. Then go to every other month.
  • daily, we use a feed through wormer at the recomendation from our vet
  • they are on daily wormer, plus paste once in spring and once in fall
  • 3x / yr
  • every 6 weeks during summer, every 8 weeks during winter
  • daily - and then 2x per year with paste wormer
  • don't have a "young' horse.
  • I deworm at 4 months, two months later start a daily dewormer for 2 months,then deworm for tape/bot
  • 3 times. Once while on their dam. Once just before weaning. Once 4 months later. Then they 3x yearly
  • worm at 2 weeks old with Strongid-P, then once a month for a year, rotating wormers.
  • Monthly
  • everyone gets dewormed regardless of age
  • every 8 weeks
  • using a gentle dewormer speciffically for babys
  • I use the daily wormer - with twice a year bots/tape worm -
  • every 3 weeks until they are 6months old then every 5 weeks
  • 0 to 12 months are dewormed every 30 days.
  • every 30 days as per vet
  • every month/12 times a year
  • Usually monthly
  • 4-6
  • My horse is 20yrs old and get dewormed each season date
  • 3 times a year

About the Author

Megan Arszman

Megan Arszman received a Bachelor of Science In print journalism and equine science from Murray State University in Murray, Ky., and loves combining her love of horses, photography, and writing. In her “free time,” when she’s not busy working as a horse show secretary or riding her American Quarter Horses on her parents’ Indiana farm, she’s training and competing her Pembroke Welsh Corgi and Swedish Vallhund in dog agility and running.

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