Our readers keep the lights on and the coffee maker working hard! As an Amazon Associate, I earn from qualifying purchases.
Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Picking the right dewormer for pigs often feels like a guessing game — you are mixing powders into feed, hoping the worms actually clear and your herd keeps gaining weight. The wrong choice means wasted meds, slower growth, and a lot of head-scratching at the trough. Here is a shortlist built from real owner experience, so you know which one actually works before the bag arrives.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you are raising a handful of backyard hogs or managing a larger herd, the right dewormer for pigs kills the right worms without stress — and these three picks have the owner proof to back it up.
Our Picks at a Glance
How To Choose The Best Dewormer for Pigs
You need a dewormer that kills the specific worms in your pigs, goes down easily, and your pigs will actually eat or drink without a fight. Here is what matters most.
Coverage: Which Worms Does It Actually Kill?
Not all dewormers hit the same internal parasites. Some target large roundworms and nodular worms only, while others also clear lungworms, whipworms, and kidney worms — a much wider sweep. The broader the coverage, the fewer times you need to retreat. Check the label against the specific worm problems in your area or from your vet’s fecal test.
Delivery: In-Feed or In-Water?
Pig dewormers come in two main forms: a powder you mix into the daily feed or a soluble powder you dissolve into drinking water. In-feed options (like a fenbendazole scoop) are great if your pigs finish their meal reliably. Water-soluble options work better when one or two pigs are off their feed but still drinking. The right method depends on how your herd eats.
Dosing Precision and Withdrawal
Dosing by body weight gives you control — too little means the worms survive, and too much can stress the animal. Look for clear weight-based instructions on the label. Also check the withdrawal period (the time between the last dose and slaughter) if you are raising meat pigs. Some powders have no preslaughter withdrawal, which is a huge convenience.
Quick Comparison
| Model | Best For | Delivery Form | Active Ingredient | Worms Covered | Amazon |
|---|---|---|---|---|---|
| Safe-Guard 1.8% Swine Scoop★ Best Overall | All-in-one coverage in feed | Scoopable powder | Fenbendazole | Lungworms, roundworms, nodular worms, whipworms, kidney worms | Amazon |
| Durvet Levamed Pig Wormer | Water-mix for show pigs | Soluble powder | Levamisole | Large roundworms, nodular worms, lungworms, threadworms | Amazon |
| StrideGuard Ivermectin Liquid | Multi-species liquid dosing | Liquid oral solution | Ivermectin | Tapeworms, roundworms, hookworms | Amazon |
In‑Depth Reviews
1. MERCK Animal Health Safe-Guard 1.8% Swine Scoop
Our pick — over 4.5★ from 450+ verified ratings; the strongest balance of quality and price.
The scoop-and-mix powder that clears more worm types than any other pick here.
This is the one owners reach for when they want broad coverage without wrestling pigs individually. The fenbendazole formula targets lungworms, adult and larval large roundworms, nodular worms, small stomach worms, adult and larval whipworms, and adult and larval kidney worms — all from a simple scoop you stir into the daily feed. The granules are small enough that pigs do not notice them, which matters when you have a picky eater.
Dosing runs over a 3-to-12-day regimen, and the label says it is safe for pigs at every stage of life. The thing that keeps coming up in owner experience is the weight gain — buyers report that it “worked great, helped pigs gain weight,” which is the real goal of deworming in the first place. It also carries no preslaughter withdrawal period, so you do not have to game the calendar before a butcher date.
The Safe-Guard bottle weighs 3.4 ounces, while the Durvet weighs 3.2 ounces. The trade-off is coverage depth. The fine print on the scoop directions is small and hard to read — something a few owners flag — so keep a magnifier handy if your eyes need it.
What Owners Praise
- Kills whipworms, lungworms, kidney worms, and more — the widest range on this list
- No withdrawal period before slaughter, so you can schedule butcher dates freely
- Pigs eat it readily mixed into feed, no wrestling required
One Real Caveat
- The print on the scooping directions is very small, which makes measuring a chore in low barn light
Grab this if: you want one powder that handles the widest range of worms — lungworms, whipworms, kidney worms — without stressing over withdrawal timing.
Think twice if: you prefer a water-soluble mix because your pigs skip meals but always drink.
2. Durvet 698920 Levamed Soluble Pig Wormer, 20.17g
The water-soluble powder that show-pig owners swear by for easy, hidden dosing.
This levamisole-based powder dissolves straight into drinking water — no mixing into a multi-day feed batch, no guessing whether the pig ate its full portion. You add water to the powder in the bottle up to the 500ml mark, agitate until clear, and serve. Any leftover solution stores at up to 25°C for up to 3 months, which stretches a single bottle across multiple treatments.
It clears large roundworms, nodular worms, lungworms, and intestinal threadworms. The crowd that loves it most is the 4H and jackpot circuit — owners mention: “This is the only dewormer that we use on our show pigs for 4H fair and jackpots.” Owners emphasize that the liquid is easy to “hide” in water, which matters when you are dealing with a stressed or finicky animal at a fairground. It weighs 3.2 ounces, while the Safe-Guard weighs 3.4 ounces, so it tucks into a tack bag without adding weight.
The trade-off is narrower worm coverage compared to the fenbendazole powder — it does not target whipworms or kidney worms. If your herd only battles roundworms and lungworms, that is fine. But if you need the full nine-yard sweep, the Safe-Guard powder is the deeper option.
Why It Wins
- Dissolves in water, so you treat every pig that drinks — even the ones off their feed
- Leftover solution keeps for up to 3 months, reducing waste
- Trusted by 4H and show-pig families for stress-free dosing at fairs
One Limit
- Does not cover whipworms or kidney worms — check your vet’s fecal test before choosing
Best for: show-pig owners and anyone needing to deworm via water when pigs are picky about feed.
skip it if: you need to knock out whipworms or kidney worms — this levamisole formula does not cover them.
3. StrideGuard Dewormer Ivermectin Liquid 1.87%, 100 ml
A ready-to-dose liquid that works across horses, cattle, goats, and pigs from one bottle.
This is the new-school pick — a 1.87% ivermectin oral solution in a 100 ml bottle with a dosing syringe included. It labels itself for horses, cattle, goats, sheep, and swine, which makes it appealing if you run a mixed farm and want one dewormer for multiple species. You measure the dose by the animal’s body weight using the syringe, then you can either give it straight into the mouth or mix it into feed or water.
The formula targets tapeworms, roundworms, and hookworms. Owners say it “works great and doesn’t have any real flavor,” which explains why most animals take it without a fuss. The liquid format is more precise than eyeballing a scoop, and the syringe gives you direct control. It weighs 3.4 ounces and comes in a 100 ml bottle.
A critical note: one owner used this on a large dog (under 100 lbs) and reported the animal could not keep food or water down by day four. That is a red flag if you plan to use it off-label on non-livestock animals. Stick to the species on the label — pigs, horses, cattle, goats, sheep — and follow the body-weight dosing instructions closely.
What It Does Well
- Covers tapeworms, roundworms, and hookworms from a single liquid bottle
- Precision dosing syringe lets you tailor every dose to the animal’s weight
- No strong flavor, so animals take it mixed into feed or water easily
What to Watch
- Worm coverage does not include whipworms or lungworms
Reach for this if: you run a mixed herd and need one ivermectin liquid that works on pigs, horses, cattle, goats, and sheep.
Look elsewhere if: you need to clear whipworms or lungworms — this liquid does not cover them, and the Safe-Guard powder is the stronger choice.
Understanding the Specs
Active Ingredient — Fenbendazole vs. Levamisole vs. Ivermectin
The active ingredient is the chemical that actually kills the worms — but each one targets a different set of parasites. Fenbendazole (found in the Safe-Guard scoop) covers a very broad range including lungworms, whipworms, and kidney worms. Levamisole (in the Durvet water-soluble powder) targets roundworms, nodular worms, lungworms, and threadworms — a narrower list but highly effective for those specific types. Ivermectin (in the StrideGuard liquid) is the standard for tapeworms, roundworms, and hookworms across multiple livestock species. Choosing the right one starts with knowing which worms your vet found in a fecal exam.
Delivery Method — In-Feed vs. In-Water vs. Oral Liquid
How you give the dewormer determines how many pigs actually get the full dose. In-feed powders (like the fenbendazole scoop) work best when your entire herd finishes its meal reliably — each pig eats its portion and the meds go down. In-water soluble powders (like the levamisole option) are smarter when one or two pigs are off their feed because they will still drink. Oral liquids with a syringe give you the most precise per-pig dose, but they require handling each animal individually, which is not always practical with a large or free-range herd.
FAQ
How often should I deworm my pigs?
Can I mix a pig dewormer into feed or water?
What is the withdrawal period for pig dewormers?
Will a dewormer for horses or goats work on pigs?
What worms does fenbendazole kill in pigs?
Is ivermectin or fenbendazole better for pigs?
How do I know the right dose for my pig?
Can I use a pig dewormer on a dog or cat?
What if my pigs refuse the medicated feed?
Final Thoughts: The Verdict
For the majority of shoppers, the dewormer for pigs winner is the MERCK Safe-Guard Swine Scoop because it kills the widest range of worms — lungworms, whipworms, kidney worms, and more — with zero withdrawal time (no waiting before slaughter) and a simple in-feed mix. If you need a water-soluble option for finicky show pigs, grab the Durvet Levamed Pig Wormer. And for farms running multiple livestock species from one bottle, the StrideGuard Ivermectin Liquid is the versatile pick.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Gardening Beyond earns from qualifying purchases. This does not affect which products we feature.