Tractor Supply stocks ivermectin only as animal dewormers — apple-flavored horse paste, cattle pour-ons, injectable solutions for cattle and swine, and sheep drench. These are farm-supply products sold off the shelf for livestock parasite control. The chain does not sell human ivermectin tablets, and no product on its shelves is approved by the FDA for people. If you are researching how human ivermectin is sold, that is a pharmacy question, not a farm-store one.

Below is what the retailer typically carries, how the pack sizes work, what the FDA says about using animal formulations in humans, and what to do if the shelf is empty. Product listings, pack sizes and state law details in this article were last verified on September 26, 2026; prices and stock change constantly and should be checked directly on the retailer's own site or in store.

Key takeaways

  • Ivermectin at Tractor Supply is sold as livestock and equine dewormer — 1.87% oral paste syringes, pour-ons, injectables and drenches.
  • Every one of these products is labeled for animal use only and is not approved, formulated or dosed for humans.
  • Horse paste syringes are the most common format; a single 6.08 g (0.21 oz) syringe is labeled to treat a horse up to about 1,250 lb.
  • Human ivermectin is still a federally prescription-only drug; the FDA has not switched it to over-the-counter status, though a handful of states have passed pharmacist-dispensing laws.
  • If a product is out of stock, the practical alternatives are other farm retailers or a veterinarian for animals, and a licensed pharmacy for people.

What ivermectin products Tractor Supply carries

A gloved hand holding a veterinary paste syringe above a feed bucket in a horse stall, showing how animal ivermectin dewormer is packaged.

The assortment is built around horse and livestock parasite control, and it varies by store and season. Recurring items on the retailer's own product pages include:

Equine oral pastes (1.87% ivermectin)

These are the products most people mean when they search for ivermectin paste at Tractor Supply. Listings include Durvet Ivermectin Paste 1.87%, Farnam IverCare, Merial/Boehringer Zimecterin and Dechra's generic paste. Durvet's paste comes in a syringe applicator and is apple flavored to encourage horses to take it, and the manufacturer states a single syringe will treat horses up to 1,250 lb. The same label carries a blunt special precaution: it is for application in horses only, and administration to other species may cause highly adverse side effects, including death. Zimecterin's listing likewise notes pre-filled syringes with weight markings for dosing and states that the product is for use in horses only. IverCare is described as controlling gastrointestinal nematodes and bots of horses, with contents sufficient to treat up to 1,250 lb of body weight.

Cattle and swine formulations

Stores commonly carry 0.5% pour-on solutions for topical application to cattle, 1% sterile injectable solutions for cattle and swine, and combination products that pair ivermectin with clorsulon for liver fluke coverage. These come in large multi-dose bottles intended for herds. Ivermectin injectables for cattle drew extra federal attention this year: the FDA issued an Emergency Use Authorization for Ivomec (ivermectin) injectable solution against New World screwworm in February 2026, and in August 2026 the agency authorized a generic ivermectin injection (Bimectin) to prevent screwworm infestations in cattle — the 14th such authorization as confirmed detections continued to grow in Texas. Those authorizations are for cattle, not people.

Sheep drench and small-animal products

Ivermectin sheep drench (0.08%) appears in some stores, as do ivermectin-containing heartworm chewables for dogs and combination poultry or goat products. Dosing differs enormously between these formats; general information about how ivermectin dosage works is not a substitute for the label on the specific product or for veterinary advice.

Current price and pack sizes

Veterinary dewormer syringes and a large unlabeled livestock pour-on bottle grouped on a counter beside a printed receipt to compare pack sizes.

Pack size is the part that stays stable; price is not. Ivermectin products have been repriced repeatedly over the past two years as generic supply and demand shifted, and Tractor Supply uses regional pricing plus separate online pricing, so a figure quoted in an article can be stale within weeks. Check the retailer's product page or your local store rather than relying on a number here.

Format Typical strength Typical pack size Labeled for
Equine oral paste syringe 1.87% ivermectin 6.08 g (0.21 oz), single dose Horses only — treats up to ~1,250 lb
Paste multi-packs 1.87% 2, 4, 6, or 12 syringes Horses only
Cattle pour-on 0.5% 250 mL to 5 L Cattle only, topical
Injectable solution 1% 50 mL, 200 mL, 500 mL Cattle and swine
Sheep drench 0.08% 960 mL and up Sheep only

A single horse paste syringe is the least expensive entry point and multi-packs lower the per-syringe cost, which is why they are stocked at the start of grazing and bot-fly seasons. Livestock bottles cost far more per container but are priced per animal dose for herds. None of this pricing has any bearing on human use — there is no lawful human dose derived from a livestock container.

Important: animal formulations are not approved for human use

A gloved hand administering paste dewormer into a horse's mouth, illustrating that ivermectin paste is labeled for animal use only.

This needs stating plainly and without hedging: the ivermectin products sold at Tractor Supply are labeled for animal use only and are not approved for people. They are not manufactured to human drug standards for that purpose, not dose-marked for human body weight, and not accompanied by human prescribing information.

The FDA's position is direct. The agency says never to use medications intended for animals on yourself or other people, that animal ivermectin products are very different from those approved for humans, and that ivermectin tablets are FDA-approved to treat people for specific parasitic infections. The FDA also states that currently available data do not show ivermectin is effective against COVID-19 and that taking large doses of ivermectin is dangerous. If a health care provider writes an ivermectin prescription, the agency advises filling it through a legitimate source such as a pharmacy and taking it exactly as prescribed.

Why the concentration matters

Animal products are deliberately concentrated. As the American Medical Association summarized the FDA's consumer update, animal formulations of ivermectin are highly concentrated because they are intended for large animals such as horses and cows. The AMA also noted that even approved levels of ivermectin can interact with other medications such as blood thinners, and that overdose can cause nausea, vomiting, diarrhea, low blood pressure, allergic reactions, dizziness, ataxia, seizures, coma and death. A paste syringe has no markings finer than tens of pounds of horse weight — there is no reliable way to divide it into a human dose.

What is approved for humans

Human ivermectin exists in two regulated forms. The FDA has approved ivermectin tablets to treat parasitic infections including intestinal strongyloidiasis and onchocerciasis, and some topical forms have been approved for external parasites such as head lice and for the skin condition rosacea. The prescription topical is a distinct product; see our overview of topical ivermectin cream. For what the evidence base does and does not support beyond those approved indications — including where trial results have been negative or inconclusive — see ivermectin uses and side effects. Pharmacy Times reported that misinformation led people to self-medicate with ivermectin for COVID-19 and that poison control centers were inundated with calls.

In-store vs online availability

A veterinarian's hands drawing liquid dewormer from an unlabeled vial into a dosing syringe on a tailgate, an alternative when a product is out of stock.

Practically, availability splits three ways.

  • In store. Paste syringes usually sit in the equine health aisle; pour-ons and injectables are in livestock health, sometimes refrigerated or behind the counter. Stock is store-specific and seasonal, and individual managers can limit quantities per customer.
  • Online with store pickup. The retailer's site shows per-store availability, which is the fastest way to confirm a specific brand without driving.
  • Ship to home. Many dewormers ship, but some injectables and large-volume bottles are restricted by carrier rules or state requirements, and temperature-sensitive items can be held during extreme weather.

Two limits are worth knowing. First, farm retailers are not pharmacies; staff cannot advise on human use and should not be asked to. Second, some products that look similar are prescription-only veterinary drugs and are not stocked at all. For animal parasite control, a veterinarian can also recommend a fecal egg count first, which often shows that routine blanket deworming is unnecessary.

Where state ivermectin laws fit in

State changes in 2025 and 2026 affected pharmacies and human-labeled ivermectin — not farm stores. A September 2026 state-by-state review found ivermectin is still classified federally as a prescription-only drug for human use and has not been reclassified as OTC by the FDA, while five states — Arkansas, Idaho, Louisiana, Tennessee and Texas — have passed laws letting pharmacists dispense it without a doctor's prescription, with roughly half a dozen more states holding active bills. Arkansas passed SB 189/Act 396 in March 2025 and Idaho passed SB 1211 on April 14, 2025, both stating that ivermectin may be sold or purchased as an over-the-counter medication without a prescription or consultation. Louisiana's SB 19 and Act 464 took effect June 20, 2025, allowing pharmacists to dispense to adults under a standing order, with required information on indications and contraindications and a screening risk assessment tool. In Texas, House Bill 25 took effect December 4, 2025, and protects pharmacists from criminal, civil or disciplinary liability; because the law says pharmacists "may" dispense rather than "shall," some pharmacies still decline. South Carolina's House passed an OTC ivermectin bill on May 6, 2026, and Georgia and Missouri have tracked bills that would permit purchase without a prescription, while a Utah proposal was halted after medical associations objected. Reporting also notes that none of the state laws include dosing guidance, and pharmacies and retailers remain free to decide whether to stock ivermectin — legal permission does not guarantee availability. Verify your own state's current rule with its legislature or board of pharmacy before assuming access; these facts were checked September 26, 2026.

Alternatives if it is out of stock

For livestock and horses

  • Another ivermectin brand. Generic 1.87% pastes are interchangeable at label dose; brand availability rotates.
  • A different drug class. Moxidectin, fenbendazole, pyrantel pamoate and praziquantel combinations cover overlapping but not identical parasites. Rotating classes without a reason can accelerate resistance, so ask a veterinarian which class your animals actually need.
  • Other suppliers. Farm co-ops, feed stores, equine catalog retailers and veterinary clinics carry the same formats. Some labels note usefulness against small strongyles resistant to benzimidazole products, which is a reason to confirm the active ingredient rather than substituting blind.

For people

Do not substitute an animal product. A clinician or pharmacist can determine whether ivermectin is appropriate at all, and a licensed pharmacy can fill it. Where pharmacist dispensing is permitted, call ahead — pharmacy associations have warned that without FDA OTC labeling information on dosage and interactions, pharmacies face practical challenges stocking and advising customers even after legal reclassification. Avoid any website offering prescription ivermectin with no prescription and no licensed pharmacist; those sellers fall outside FDA oversight, and product identity and purity cannot be assumed.

Frequently asked questions

Is ivermectin for sale at Tractor Supply without a prescription?

The animal dewormers are sold over the counter as farm supplies, because most livestock antiparasitics are OTC animal drugs. That says nothing about human use — these products are labeled for animal use only and are not approved for people.

Does Tractor Supply sell human ivermectin tablets?

No. It is a farm and ranch retailer, not a pharmacy. Human ivermectin remains federally prescription-only and has not been reclassified as OTC by the FDA, so it is dispensed through pharmacies.

How much ivermectin is in one horse paste syringe?

A 6.08 g syringe of 1.87% paste is labeled to treat up to 1,250 lb of body weight, which works out to roughly 113 mg of ivermectin in the tube — many times a typical single human dose, and impossible to divide accurately using horse-weight markings.

Can I give horse paste to my dog, goat or chickens?

Not based on the horse label. The manufacturer warns the product is for horses only and that giving it to other species may cause highly adverse effects, including death. Some herding-breed dogs are also genetically sensitive to ivermectin. Ask a veterinarian for species-appropriate products and doses.

Why do prices and stock keep changing?

Seasonal deworming demand, generic manufacturing shifts, and renewed interest driven by state law changes and the ongoing New World screwworm response all move the market. The FDA has issued more than a dozen emergency use authorizations for animal drugs against screwworm as detections in Texas continue to grow, which affects cattle-product demand in particular.

Is ivermectin effective against COVID-19?

No — the FDA has not approved it for that use. The agency states that currently available data do not show ivermectin is effective against COVID-19, and ivermectin's FDA-approved role is for parasitic infections, with studies showing no efficacy against the virus.

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