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Happy Jack® Liqui-Vict 2X™ — Liquid Worm Medicine for Dogs & Puppies
Liqui-Vict 2X is another convenient wormer from Happy Jack for the removal of roundworms (Toxocara canis & Toxascaris leonina) and hookworms (Ancylostoma caninum & Uncinaria stenocephala). Simply measure appropriate amount of Liqui-Vict 2X with enclosed measuring spoon and mix with food. That’s it. We recommend it as part of your monthly preventative health care plan to eliminate internal parasites. Each 2 oz. bottle worms 120 lbs. of body weight.
- Removes roundworms and hookworms in a single dose — no prescription required
- Butterscotch-flavored liquid formula — dogs lick it willingly from the bowl
- Safe for puppies from 2 weeks of age, adult dogs and lactating females
- Each 2 oz. bottle deworms up to 120 lbs. of body weight
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Est. 1946
80 Years of Animal Health
FDA Approved
Registered & Certified Formula
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At Tractor Supply Co.
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What Is Happy Jack® Liqui-Vict 2X™ Dewormer?
Happy Jack® Liqui-Vict 2X™ is a liquid worm medicine for dogs formulated to remove roundworms and hookworms in a single oral treatment. If your dog is showing signs of worms — including a pot-bellied appearance, dull coat, scooting, visible worms in stool, or unexplained weight loss — Liqui-Vict 2X™ is one of the most trusted over-the-counter dewormers for dogs available without a prescription in the United States.
The active ingredient is pyrantel pamoate (4.54 mg/mL), a proven anthelmintic that paralyzes and eliminates roundworms (Toxocara canis and Toxascaris leonina) and hookworms (Ancylostoma caninum and Uncinaria stenocephala) on contact. The formula is suspended in a palatable butterscotch-flavored liquid — making it one of the most dog-friendly dewormers available. Most dogs will lick the dose directly from the bowl without any resistance. No withholding of food is required before or after treatment.
Liqui-Vict 2X™ is safe for puppies as young as 2 weeks of age, adult dogs and lactating females. Each 2 oz. bottle deworms up to 120 lbs. of body weight — making it a cost-effective deworming medicine for dogs of all sizes. For dogs in heavily contaminated environments, monthly treatment is recommended as a preventative. It is available at Tractor Supply stores nationwide and can be purchased online for in-store pickup at tractorsupply.com.
How to Deworm a Dog at Home — 3 Simple Steps
Three steps pulled directly from the official label:
- Weigh your dog accurately. Dispense one full teaspoon (5 mL) of Liqui-Vict 2X™ for every 10 lbs. of body weight using the enclosed measuring spoon.
- Pour directly into your dog’s bowl or mix with a small amount of food. Most dogs find the butterscotch-flavored formula very palatable and will lick the bowl clean willingly.
- Repeat as needed. For puppies, treat at 2, 3, 4, 6, 8 and 10 weeks of age. For lactating females, treat 2–3 weeks after whelping. For adult dogs in heavily contaminated environments, treat monthly as a preventative.
Dosage note: Each 2 oz. bottle contains enough dewormer for up to 120 lbs. of body weight. Read the entire label before each use.
Frequently Asked Questions About Worm Medicine for Dogs
What are the signs my dog has worms?
Common signs that a dog has worms include: a pot-bellied or bloated appearance (especially in puppies), visible worms or worm segments in the stool, scooting or dragging the rear end along the ground, unexplained weight loss despite a normal appetite, dull or rough coat, vomiting, and low energy. Roundworms and hookworms are two of the most common internal parasites in dogs and can be treated at home with a proven liquid worm medicine like Happy Jack® Liqui-Vict 2X™.
What kills worms in dogs fast?
Happy Jack® Liqui-Vict 2X™ uses pyrantel pamoate as its active ingredient — a fast-acting anthelmintic that paralyzes and eliminates roundworms and hookworms on contact. Clinical studies show it is up to 99% effective against Toxascaris leonina and 97% effective against Ancylostoma caninum. It is formulated as a single-dose treatment, meaning one correct administration is all that is required for most dogs. Results are typically visible within 24–48 hours of treatment.
Can I use Liqui-Vict 2X™ on puppies?
Yes. Happy Jack® Liqui-Vict 2X™ is safe for puppies as young as 2 weeks of age. For maximum protection, puppies should be dewormed at 2, 3, 4, 6, 8 and 10 weeks of age. Lactating females should also be treated 2–3 weeks after whelping. The butterscotch-flavored liquid formula makes it easy to administer — simply mix the appropriate dose into a small amount of food.
Does Liqui-Vict 2X™ treat roundworms in dogs?
Yes. Liqui-Vict 2X™ is specifically formulated to remove two types of roundworms — Toxocara canis and Toxascaris leonina — as well as two types of hookworms — Ancylostoma caninum and Uncinaria stenocephala. It is one of the most trusted roundworm treatments for dogs available over the counter in the United States and has been used by dog owners, breeders and farmers since 1946.
Do I need a prescription for Liqui-Vict 2X™?
No. Happy Jack® Liqui-Vict 2X™ is available over the counter — no veterinary prescription is required. It is one of the most accessible liquid worm medicines for dogs, available at Tractor Supply stores nationwide and on Amazon. No food needs to be withheld before or after treatment, and administration is as simple as measuring the correct dose with the included teaspoon and mixing it into your dog’s bowl.
Where can I buy dog worm medicine at Tractor Supply near me?
Happy Jack® Liqui-Vict 2X™ Liquid Dewormer is available at Tractor Supply stores nationwide. Use the store locator on this page to find the nearest Tractor Supply location carrying Happy Jack® products. You can also buy online and pick up in-store at tractorsupply.com. Additionally, Happy Jack® products are available at many local feed stores, farm supply retailers and pet supply stores across the United States.
About Happy Jack® — Animal Health Since 1946
Happy Jack® is a third-generation American family business that has been manufacturing EPA-approved animal health products since 1946. From liquid dewormers and worm medicine for dogs to mange treatments, flea and tick control and skin care shampoos, Happy Jack® serves dog owners, breeders, farmers and ranchers across the United States. Our products are sold over the counter at farm, feed and ranch supply retailers nationwide — including Tractor Supply, the nation’s largest rural lifestyle retailer. When it comes to the health of your animals, Happy Jack® has been the trusted name for over 80 years.
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