QUEST Gel Moxidectin Dewormer & Boticide for Horses & Ponies, 0.5-fl oz syringe

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About This Item

Details

  • Broad-spectrum dewormer targets encysted small strongyle larvae and bots, large strongyles, roundworms, pinworms, hairworms and stomach worms.
  • Contains active ingredient moxidectin.
  • Gel formula dissolves on the tongue to make deworming easier.
  • 1 syringe treats a horse up to 1,500 pounds.
  • Approved for use in breeding mares and stallions.

Ingredients

Instructions

Convenient Parasite Treatment

The Quest line offers convenient parasite treatment. Just one dose of Quest Gel (moxidectin) or Quest Plus Gel (moxidectin/praziquantel) treats and controls small strongyles (including encysted forms), large strongyles, bots, pinworms, hairworms, and stomach worms.

Long-Lasting Protection with Twice-a-Year Treatment

Twice-a-year treatment for long-lasting parasite suppression with Quest and Quest Plus. Just one dose of Quest in the spring and one dose of Quest Plus in the fall may be the only parasite treatment needed all year long for most horses. The Quest line of products are the only ones that effectively treat encysted small strongyles and are safe for breeding mares, stallions, and horses six months old or older.

Why Choose Quest and Quest Plus?

Trust Quest's 25+ year legacy for safe, effective parasite control.

  • The gel formula dissolves quickly on the tongue.
  • The Quest series come in a SURE-DIAL syringe for easy and accurate dosing.
  • In a study, one dose of Quest was nearly twice as effective in reducing small strongyle egg counts as a five-dose treatment of fenbendazole. [1]

About Zoetis

At Zoetis, we’ve supported the health of animals for over 70 years. As the makers of Quest, we’re proud to offer trusted deworming protection for horses, helping defend against internal parasites and supporting overall wellness. From seasonal care to year-round confidence, we’re here for you and your horse every step of the way.

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IMPORTANT SAFETY INSTRUCTIONS

Do not use Quest Gel or Quest Plus Gel in foals less than 6 months of age or in sick, debilitated and underweight horses. Do not use in other animal species, as severe adverse reactions, including fatalities in dogs, may result. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism.

Reference:

Mason ME, Voris ND, Ortis HA, Geeding AA, Kaplan RM. Comparison of a single dose of moxidectin and a five-day course of fenbendazole to reduce and suppress cyathostomin fecal egg

counts in a herd of embryo transfer-recipient mares. J Am Vet Med Assoc. 2014;245. 1.

QST-00264

Questions & Answers

3 Customer Questions


What is the boticide


Can it be used for donkeys both full size and miniature ones?

Answer by ChewyDec 30, 2022
This product is intended for horses and ponies.

Does this kill tapeworms in cats? If so is it safe to give them?

Answer by ChewyJul 11, 2021
This dewormer is designed for use in horses and ponies only. It is not suitable for cats.
4.9
Rated 4.9 out of 5 stars
318 Ratings

82 Customer Reviews



Rated 5 out of 5 stars
Verified Purchase
By Samantha on Apr 17, 2026

Early Spring Dewormer

I rotate dewormers depending on the season and this is my go-to for early spring (March). Works great and my horses take it without any issues.

I rotate dewormers depending on the season and this is my go-to for early spring (March). Works great and my horses take it without any issues.


Rated 5 out of 5 stars
Verified Purchase
By Maureen on May 30, 2026

Products ingredients

I've had horses for close to 30 yrs and worming horses is so important that coverage of dewormer is my top priority. This covers all and it always amazes me I don't

I've had horses for close to 30 yrs and worming horses is so important that coverage of dewormer is my top priority. This covers all and it always amazes me I don't have to struggle giving this. Horses seem to take this so much easier.


Rated 5 out of 5 stars
Verified Purchase
By Melinda on Jun 28, 2026

Less toxic to dung beetles

We are working to establish dung beetles on our farm, and moxidectin is less toxic to dung beetles than ivermectin. It has been effective for parasite control in

We are working to establish dung beetles on our farm, and moxidectin is less toxic to dung beetles than ivermectin. It has been effective for parasite control in our horses


Rated 5 out of 5 stars
Verified Purchase
By Merlin on Aug 25, 2021

Great results

Very happy with the results it was recommended for use in pigeons and works wonders it actually gets any parasites in the loft as well

Very happy with the results it was recommended for use in pigeons and works wonders it actually gets any parasites in the loft as well


Rated 4 out of 5 stars
Verified Purchase
By Barb on Oct 2, 2020

Horse wormer

It's a ependable old stand by that I have used it for years. It does a good job eliminating bots and worms. Its Convenient to have it delivered.to my door and

It's a ependable old stand by that I have used it for years. It does a good job eliminating bots and worms. Its Convenient to have it delivered.to my door and the price is reasonable le.


Rated 5 out of 5 stars
Verified Purchase
By LISA on Nov 24, 2024

It worked fast

Great for Botworms especially for horses in Mississippi area

Great for Botworms especially for horses in Mississippi area


Rated 5 out of 5 stars
Verified Purchase
By Joyce on Apr 21, 2023

Just be wise

I only use Quest once my horses reach 3 years of age or more , On iffy horses I use the Powerpac wormer once a year until they reach a safe age ,Along with either

I only use Quest once my horses reach 3 years of age or more , On iffy horses I use the Powerpac wormer once a year until they reach a safe age ,Along with either of these wormers i also do a monthly or Bi-Monthly rotation of Ivermectin


Rated 4 out of 5 stars
Verified Purchase
By Blakley on Jun 16, 2025

Gel formula is a life saver!

For the past 12 years of owning my QH he has always thrown a fit with paste wormers, but never knew it was the formula! I decided to try the gel as one last attempt

For the past 12 years of owning my QH he has always thrown a fit with paste wormers, but never knew it was the formula! I decided to try the gel as one last attempt to help make worming easier for him and me, this gel really did the trick! Reduced the fight by 80% for sure! And love that both seasonal wormer in one place!


Rated 5 out of 5 stars
Verified Purchase
By Sheri on Nov 9, 2024

Great choice for horses that are resistant to ivermectin

My PPID horse can’t have praziquantel so this is a big plus for me since he has become resistant to ivermectin. Please keep making it.

My PPID horse can’t have praziquantel so this is a big plus for me since he has become resistant to ivermectin. Please keep making it.


Rated 5 out of 5 stars
Verified Purchase
By Debra on Jun 1, 2026

Quest horse wormer

Good rotation production prevent parasites in my horses. Reasonabily pticed

Good rotation production prevent parasites in my horses. Reasonabily pticed