Quick Answer

Quest Plus Gel is a strong choice if you want one syringe to cover tapeworms, bots, roundworms, and encysted small strongyles in a horse up to 1,500 pounds, with up to 90 days of protection. It suits owners who prefer fewer deworming days per year and can dose accurately by weight. If your horse is under 1,500 pounds but you want more frequent rotation, or you need a product for a mini or foal under the labeled weight range, another dewormer may fit better.

What One Dose of Quest Plus Gel Actually Covers

Quest Plus combines moxidectin and praziquantel in a single oral gel. The moxidectin handles encysted small strongyles, bots, and roundworms; the praziquantel targets tapeworms. That combination matters because tapeworms and encysted small strongyles are two parasites many single-ingredient dewormers miss.

The catalog states each syringe treats horses weighing up to 1,500 pounds and delivers up to 90 days of parasite protection. That longer window is the main practical difference from products dosed every 6 to 8 weeks. Fewer treatment days means less handling stress for the horse and less scheduling work for you.

How to Use the Dosing Syringe Correctly

The syringe is weight-marked, so you set the ring to your horse's actual weight before dosing. Guessing weight is the most common mistake: a 1,200-pound horse given a 1,000-pound dose gets less moxidectin than intended, which can reduce effectiveness. Use a livestock scale or a weight tape if you do not have a recent weight.

Deliver the gel inside the mouth, at the back of the tongue, and hold the head level briefly so the horse swallows rather than spits. Do not split a syringe across two horses. If you are deworming a herd, use one syringe per horse and record the date so the 90-day window stays accurate.

Where Quest Plus Fits in a Deworming Rotation

Because moxidectin is a potent active, many owners use Quest Plus once or twice a year and rotate with a different class, such as ivermectin or fenbendazole, for other treatments. This is not a product to use every few weeks. The 90-day protection window is built into the label, so stacking it with another dewormer too soon adds cost without benefit.

If your vet has recommended a specific rotation based on a fecal egg count, follow that plan. Quest Plus is best used as the tapeworm-and-encysted-strongyle step in that schedule, not as a catch-all given on a whim.

What the Catalog Does Not Tell You

The product record does not list a minimum weight or age, so if you are deworming a foal, a mini, or a horse under the labeled range, confirm suitability with your veterinarian before buying. It also does not list flavor or palatability details, which matters for picky horses that reject oral gels.

Because moxidectin persists longer than some actives, do not use Quest Plus on a horse that has had a recent adverse reaction to a moxidectin product. When in doubt, ask your vet rather than guessing from the label alone.

Decision Rules for Buying Quest Plus Gel

  • Match the syringe to your horse's weight: Quest Plus treats horses up to 1,500 pounds. If your horse is close to or over that limit, this product is not the right fit. Weigh before you buy, not after. Under 1,500 lbs: suitable. Over: choose a different dewormer.
  • Choose it for tapeworm and encysted strongyle coverage: The moxidectin and praziquantel combination targets tapeworms and encysted small strongyles, which many single-active dewormers do not cover. Best when your rotation needs tapeworm and encysted strongyle control in one dose.
  • Plan around the 90-day window: Do not re-dose sooner than the label allows or stack it with another dewormer. Mark the date and rotate to a different class at the next interval. One dose per 90 days, then rotate.
  • Confirm before using on foals or minis: The catalog does not list a minimum weight or age. For horses outside the labeled weight range or for young stock, ask your vet first. No minimum weight listed: verify with your vet.

Product Facts

  • Quest Plus Gel De-wormer for Horses: Quest Plus Gel Horse Dewormer provides broad-spectrum parasite control in a single dose, treating and controlling encysted small strongyles, bots, roundworms, and tapeworms. One syringe covers four parasite groups, so you avoid buying separate tapeworm and bot products.
  • Quest Plus Gel De-wormer for Horses: Formulated with moxidectin and praziquantel, each syringe treats horses weighing up to 1,500 pounds and delivers up to 90 days of parasite protection. The 90-day window reduces deworming days per year, but the 1,500-pound cap means very large horses need a different plan.
  • Zen Clipper Precise Nail Clippers for Dogs: Zen Clipper Precise has a patented adjustable blade that provides precise control over the amount of nail you clip, and this size is appropriate for dogs from approximately 25lbs to 100lbs. If you are already managing horse and dog care in one trip, this clipper suits medium and large dogs without the guesswork of standard clippers.

Who Quest Plus Gel Is For

Best for

  • Owners of horses up to 1,500 pounds who want tapeworm, bot, roundworm, and encysted strongyle coverage in one syringe
  • Owners who prefer fewer deworming days per year and can dose accurately by weight
  • Horses on a vet-guided rotation that needs a moxidectin and praziquantel step

Not for

  • Horses over 1,500 pounds, since the syringe is labeled for up to that weight
  • Foals, minis, or horses outside the labeled weight range without veterinary confirmation
  • Owners who want a short-interval dewormer they can give every few weeks