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

Rated 4.25 out of 5 stars


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$17.99Chewy Price
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Top IngredientsMoxidectin/Praziquantel.Moxidectin.Active: 1.96% Fenbendazole, Inactive: Ground Wheat, Calcium Carbonate...Ivermectin.Active Ingredient: Ivermectin 1.55%, Praziquantel 7.75%.
Health FeatureAnti-ParasiticAnti-ParasiticAnti-Parasitic

About This Item


  • Broad-spectrum dewormer targets tapeworms, encysted small strongyle larvae and bots, large strongyles, roundworms, pinworms, hairworms and stomach worms.
  • Contains 2 active ingredients—moxidectin and praziquntel.
  • Gel formula dissolves on the tongue to make deworming easier.
  • One syringe treats a horse up to 1,500 pounds.
  • Approved for use in breeding mares and stallions.

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Questions & Answers

2 Customer Questions

How often should I use this dewormer?
Answer by ChewyJul 09, 2021
One syringe treats a horse up to 1,500 pounds.

How do you get the tip of injection off?
Answer by ChewyMay 04, 2022
To remove the cap, you can twist it off.

ReviewsWrite a Review

Rated 4.25 out of 5 stars
16 Ratings
Would recommend to a friend

16 Customer Reviews

Rated 4 out of 5 stars
By Lydi on Jul 24, 2023

Effective, though she's not happy about the taste

I've been using this for years and I've never had a problem with it. I'm not sure what the other reviews are talking about when they say it killed their horse. My 19-year-old mare, who I've owned for almost ten years, gets this at least a few times a year, as I alternate it with Ivermectin and Strongid to try and cover all the parasites I can. My horse hates the taste, but, as someone who is an experienced horse owner who regularly deworms their horse and works at a vet clinic, it's not hard to dose your animal. Shove it in their mouth as far back as you can. Don't feed it like a treat. They're not going to like it, so it's your job to shove it in as far back as possible. Halter them, hold them, and move fast. I definitely recommend Quest Plus and Quest.

Rated 5 out of 5 stars
By Hilseph on Aug 24, 2023
Top 500 Contributor

Great dewormer

I’ve been giving Quest Plus to my horses at least once a year for 10 years and never had an issue. It’s very effective and my dressage horse seems to find Quest Plus less nasty than other dewormers, which is nice. My old gelding found it vile but he’d still swallow it and he had the same reaction to every dewormer.

Rated 5 out of 5 stars
By Tllinker on Jun 20, 2023

Great Delivery

It is nice to be able to get my dog and horse supplies from Chewy. This was the first time I thought about wormer for my horses and there it was. Thank you.

Rated 1 out of 5 stars
By Karen on Apr 5, 2023

Killed my Horse

I had never used Quest before and wanted to try it. So sorry I did. Within 10 minutes of administering it to my horse, he went down. Could not get him back up and ultimately had to have him put down.

Rated 5 out of 5 stars
By Chloe on Dec 14, 2022

Awesome product

Very effective, easy to use. Horses don't even seem to mind the taste (that much) Chewy is the best, always offering high quality products at good prices and unparalleled customer service!

Rated 5 out of 5 stars
By RobinsMom on Aug 8, 2022

Great for Bots and Tapeworms

Bots and tapeworms cannot be detected thru a fecal. Most of the usual horse wormers don't cover tapes & bots. This one is one of the very few that does. I asked my vet what to use and she recommended this product. I will be using this 2x per year from now on!

Rated 5 out of 5 stars
By Debo on Feb 24, 2022

Does the trick

It’s effective! I would have never discovered it if the ivermectin weren’t sold out!

Rated 5 out of 5 stars
By Joyszoo on Jan 10, 2022

Great competitive prices

Great DeWormer For November. You can be confident with Chewy's competitive pricing and I always receive their products, promptly!

Rated 5 out of 5 stars
By BrianW on Oct 21, 2021

Very satisfied

Quest plus is excellent Dewormer. I use it in both my horses. Just my opinion. Had no trouble injecting into mouths. Those that have trouble have not desensitized their horses to the process well enough. Mine follow me around afterwards looking for more.

Rated 5 out of 5 stars
By reen5horse on Aug 22, 2021


I have a non kill animal rescue ranch and all my purchases for the animals are out of pocket. This was the BEST PRICE WITH FREE SHIPPING so Chewy became one of my suppliers for all my dogs, cats, chickens, burros, and horses. Had to call customer service and they where so helpful and treated me as a valued customer something I look for when I buy.