GiarCidia Zap-Wormer – Liquid Dewormer for Dogs and Cats, 6 Types of Worms

GiarCidia Zap-Wormer – Liquid Dewormer for Dogs and Cats, 6 Types of Worms

120 ml / Chicken
Sale price  $58.99 Regular price  $69.55
Skip to product information
GiarCidia Zap-Wormer: 6 types of worms, from 2 weeks of age, made in the usa
6 types of wormsFrom 2 weeks of ageMade in the USA

Zap-Wormer

Liquid dewormer for 6 types of worms · dogs and cats · 120, 500 and 1000 ml

Sale price  $58.99 Regular price  $69.55
  • Six worms, one bottle: tapeworm, roundworm, hookworm, whipworm, pinworm and lungworm.
  • Short course: once a day for 3 days.
  • Easy to give: a flavored liquid, by mouth or in food.
SizePrice per ml
Size
Pet food flavor
Purchase option

Secure checkout · Free shipping over $70

American Express Apple Pay Diners ClubDiscoverGoogle Pay Mastercard PayPalShop Pay Visa

Treating something else too?

Giardia + CoccidiaGiarCidia CARE $62.99
FleasDefender $39.99
TapewormPrazi for Dogs $39.99
What's in the bottle?

99% USP Pyrantel (28.54 mg/ml) and 99% USP Fenbendazole (47.86 mg/ml), in a vegetable glycerin base with no PEG.

How do I give it?

Shake well. Measure 1 ml for every 5 lb with the syringe, then give it by mouth or mix it into a little food. Once a day for 3 days.

Can puppies and kittens have it?

Yes, from 2 weeks of age, per the label.

How often should I deworm?

The label suggests repeating every 3 to 4 months.

Do I need a prescription?

No. It's sold over the counter, so you can treat at home.

What if my pet won't take it?

Contact us and we'll send a different flavor for free.

  • Flavor guaranteeFree swap if refused
  • Made in the USAFDA-approved facility
  • Dogs & catsOne formula for both
“We have used the dewormer for about 5 litters now. It works extremely well. I will be telling all of my breeder friends about it. Thanks Giarcidia.”
D&T Services Google review
  • Treats 6 types of worms
  • Pyrantel + Fenbendazole
  • Once a day for 3 days
  • From 2 weeks of age
  • Syringe in the box
  • Made in the USA
  • 5.0 on Google
  • Free shipping over $70

Everything in the bottle. Nothing to guess.

  • 6 types of wormsTapeworm, roundworm, hookworm, whipworm, pinworm, lungworm
  • Pyrantel28.54 mg per ml
  • Fenbendazole47.86 mg per ml
  • Flavored liquidChicken, milk or vanilla
  • Syringe in the boxDose by weight
  • Made in the USAIn an FDA-approved facility
  • 5 stars: 21 (88%)
  • 4 stars: 2 (8%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (4%)
  • 1 star: 0 (0%)
P
Pablo C Jeronimo da s
Excellent dewormer

Excellent dewormer, very efficient.

M
M. D.
EXCELLENT DEWORMER AND CUSTOMER SERVICE!!!

One of my neighbors use to kick feral cats till death. One of them came to my home looking for shelter and help. He was kicked on his face/check bone, resulting in swollen head/face/an eye closed. I received him even he doesn't allow me to touch him. After a month or so, his external wounds healed, but was still almost motionless, just barely eating and sleeping l time. After the initial month, I realized he was infested with fleas, and to my surprise, infested with tapeworms too, to the point he was vomiting tapeworms! I have upload one of the pictures I took. It's gross but it can prove what I'm saying. The two bottles of Zap Wormer I had on hand, were kept unused because I wasn't sure if they were OK because smell horrible, have a white sediment and my own cats refused to take it. So I contacted Francisco, from Giarcidia. He was very nice supportive. He sent me two replacement bottles of Zap Wormer, one milk flavor and the other my cats favorite: vanilla flavor manufactured specially for my cats, because that flavor was out of stock. Since the feral cat scratched me the two times I handle him, I decided to mix the appropriate amount of zap wormer with his wet food. I gave him the recommended dose/treatment, praying for him to survive since he looked really bad. He did survive, and now looks much better, eats very well, and now is exploring around, behaving as any other cat: curious and with his head lifted. He is still recovering. I'm going to repeat the treatment. Thank you Francisco from Giarcidia.

L
LaDawn
Works fast! You won't regret it!

Works great! We have 4 cats. Our last kitten ate a bug. 2 days later he was puking & a few after that I saw a worm in his stool. Purchased this. I gave it to all my cats twice a day for 3 days. I ordered chicken 1st & it was a bit of a fight to get them to take it so I ordered the vanilla. Everyone is worm free thank goodness. Really great product!

d
dawn eagleman
Good stuff

Works great!

W
W. McQueen
My vet said this is a good wormer

I showed my vet and he said this is a good wormer. It has pyrantel and fenbendazole

r
ryan marshall
Best over the counter dewormer you can get

This is a great dewormer. It is a broad spectrum i like the fact that you can use it on dogs and cats. All the animals seem to like it i have been using it for several years now. If you have any questions, the customer service, is it awesome.

L
Laurie
Worth the money

This actually worked. A week after I finished worming, my cat is now eating, putting on weight, and is much more active. I gave it to her directly with included syringe, she seemed to like it (vanilla flavor). Plenty left over to worm my medium sized dog as well. Will buy again.

R
Rebecca Zettlemoyer
Does the trick!

I was skeptical that a non-Rx dewormer would work but it does! I was having issues with my cat pooping outside the litter box because of worms. After just one dose, it starts to take effect and he’s back to doing his business in the box. I regularly use it now to have a happy kitty and clean floors.

d
dak1
DEWORMER WORKED

THE DEWORMER WORKED THE BEST FOR BOTH MY BOYS MY GSD AND MY CAT. BOTH ARE BABIES. GSD AND A KITTEN.

p
penny
She did well with it

I put it in her morning tiny bowl of half and half. heheheh... shes feral except to us two

K
Kim
Works as promised

Arrived as promised. Milk flavor was easy to hide in their food. Hopefully won’t need it again but if we do we will use them again.

K
Kathryn vargas
Happy Furbabies

So this company is actually pretty amazing and their product is phenomenal. I have three dogs of my own and one cat and I just am currently fostering three kittens. I contacted the product information number and the guy got right back to me at 10:00 at night and helped me dose this product correctly as I was a little confused. Their customer service is amazing and the product is a pharmaceutical-grade effective product. I use it for my dogs consistently and I'm super happy. It's nice to know that it doesn't have a lot of additives and it has the best of everything in it. I highly recommend this company. I will also update because I have three foster kittens that are super healthy, gaining weight, but they have diarrhea. I spoke to the rescue vet and they said it's probably parasites so I'm going to do a three-day treatment on them now with this gentle product and I will update after. I am one happy customer. Frank, the guy who works there, is the nicest person.

T
Teachering
Buy With Confidence

Yes, it’s expensive but if used right it works very well.

L
Lisa
Pricey but works.

Even though it’s a lil pricey if you give the correct dosage for 3 days it does help..

C
Charles Williams

I don't like the fact that it doesn't show an expiration date, and my cat won't even consume it with the food she normally eats!

A
Amy P.
Works Great on Cats and Dogs

It dewormed 1 outside cat and 5 indoor cats, as well as a 58 pound black lab dog. Took dog to the vet and did a fecal test and it was negative. Highly recommend. It works best to miss it with canned cat food. They liked the milk taste. For the dog I added it to her kibble.

R
Ricky Lake
This worked well on two large dogs.

Mixed with dog food. Both dogs sniffed the food, then ate every bit. Did this for three days consecutively. No more worms, their poop was normal. I recommend this product. Oh, and I tried this on one of my cats. She didn’t like it, but she finally ate it. Now, will try to feed it to my other four cats. I’m mixing this with canned cat food that I know my cats really like, to try to make sure the cats eat it.

Q
Q.O’Brien Wherry
Works well

Very good product!

A
Amazon Customer
Deworming

Easy to use

s
sharon king
Tastes good

Cars do not reject it so it the taste much better good. Seems to work well

T
Teresa

Great customer service and quick delivery.

J
Jennie
Really works

I used it on my puppy and soo many worms came out dead. It has the right ingredients and works fast and well. Note: before the worms came out, her belly was growling loudly and she was not wanting to eat but that didn't last long. The worms were dead and out.

K
Kindle Customer
Easy wormer

My dogs ate it on their freshpet and picked the bowl cleaner. I noticed more playful carefreeness by the next day.

M
Michelle D
Works

Very happy, Been waiting for this to come back, I use it for all my babies, cat, dog and ferrets and It seems to work great, had no problems also the fact I use 1 product for all my babies it’s a no brained besides also multiple applications so the product‘s gonna last a while, I do recommend GiarCidia, thank you

Measure. Give. Repeat.

By mouth
By mouth
Or in food
Or in food
AI placeholder
  1. Step 1 Measure

    Weight on the label chart, then the syringe.

  2. Step 2 Give

    By mouth, or mixed into food.

  3. Step 33 days Repeat

    Once a day for 3 days.

From the label: can be given from 2 weeks of age. Repeat every 3 to 4 months.

How much to give, pet by pet.

Move the slider to your pet's weight. We'll show the daily dose, the full course, and which bottle covers it.

How many?
1
20 lb

Your 20 lb dog gets

4mlonce a day

Your dog needs about 40 ml for a full 3-day course.

1 × 120 ml covers it

From the Zap-Wormer label: 1 ml per 5 lb (5 lb = 1 ml up to 40 lb = 8 ml; over 40 lb, combine doses), once a day for 3 days. Always follow the label on your bottle.

Frank Bustos showing one of his Rottweilers

Started in a breeder's kennel.

GiarCidia Inc. was founded in February 2024 by a dedicated breeder who spent nearly a decade raising show-quality and family-oriented Rottweilers. Throughout those years, his top priority was ensuring that every puppy went home healthy, happy, and free from worms and parasites.

Like many breeders, he faced the ongoing challenges of Giardia, Coccidia, and intestinal worms, conditions that can seriously impact a puppy’s health and, in some cases, even result in loss of life. Determined to find a better solution, he made countless veterinary visits and explored various treatment options. Despite his efforts, he found no reliable protocol that consistently delivered the results he was looking for.

Rather than accepting the problem, he committed himself to finding a solution.

Read Frank's full storyShow less

After more than two years of extensive medicine research, conducting trials, evaluating results, and spending countless hours in the laboratory, Mr. Bustos developed a formula that consistently produced positive results within his own breeding program. Wanting to ensure its effectiveness beyond his own litters, he provided trial products to breeders across the United States, allowing them to test the formula with their own puppies before introducing it to the public.

The feedback was overwhelmingly positive.

Following that feedback from breeders, the formula was later expanded for use in cats as well. Throughout the development process, GiarCidia remained committed to quality and compliance, including making every product in an FDA-approved facility and following applicable FDA guidelines.

Today, our products are trusted by breeders and pet owners across the country. Our formulas are made to help treat common intestinal parasites, and we believe pet owners should have access to solutions that can be given conveniently from home, reducing unnecessary stress on both pets and their families.

Our products are manufactured with quality in mind and are available in a variety of natural flavors to make giving them easier and more enjoyable for your pets.

With customers across the USA and more than 100 five-star Google reviews, we are proud of the trust our customers place in us. Nothing is more rewarding than helping pet owners see their dogs and cats healthy, thriving, and living their best lives.

GiarCidia products were not created by someone looking to enter the pet health industry overnight. They were developed by someone who personally experienced the same challenges faced by breeders and pet owners every day. Through years of hands-on experience, research, testing, and dedication, Mr. Bustos developed solutions designed to address real-world problems and provide practical support for the health and well-being of pets everywhere.

10 yrs
Breeding Rottweilers
2+ yrs
Developing the formula
5.0
On Google, 136 reviews

Frank BustosFounder & CEO, GiarCidia

Zap-Wormer vs. tablets.

A liquid you give by mouth or in food. No pill to hide, nothing to split.

FeatureFlavored liquidNo pill to hideDoseFor your pet's weightFlavorsSyringe in the boxDogs & cats
GiarCidiaZAP-WORMERTo the ml3
TabletsFixed sizesUsually none

“If your pet won't take it, that's on us.”The GiarCidia team

Picky eater? We've got you.

Flavor guarantee

Zap-Wormer comes in three flavors. If your pet won't take the one you picked, we'll send a different flavor for free.

  1. Pick chicken, milk or vanilla
  2. Pet turns it down? Contact us
  3. We send a different flavor, free

Good to know.

Before you start
  • Shake well before use
  • From 2 weeks of age
  • Once a day for 3 days
  • Label: repeat every 3 to 4 months
  • Keep out of reach of children

Questions, answered.

Zap-Wormer or Fen-Wormer?

Zap-Wormer treats 6 types of worms: tapeworm, roundworm, hookworm, whipworm, pinworm and lungworm. Fen-Wormer (fenbendazole 10%) treats tapeworm, roundworm, hookworm and whipworm.

From what age can I use Zap-Wormer?

The label says it can be used from 2 weeks of age.

How often should I deworm?

Zap-Wormer is given once a day for 3 days. The label suggests repeating every 3 to 4 months.

Should I treat all my pets?

Worms spread easily between pets that share a yard or bedding, so many owners treat every pet in the home. Ask your vet if you are unsure.

When should I call the vet?

If your pet is weak or pale, has blood in the stool, keeps vomiting, or a very young puppy or kitten seems unwell.

Which size should I buy?

Each pet needs 1 ml for every 5 lb, once a day for 3 days. The 500 ml and 1000 ml bottles cost less per ml, so they suit litters, rescues and multi-pet homes.

Dealing with something else?

Each GiarCidia liquid is made for something different. Pick the one that matches what you're seeing.

GiarCidia ToltraBoss – Toltrazuril 5% Coccidia Treatment for Dogs and CatsCoccidia
ToltraBoss (15) Coccidia only
$42.99 View
GiarCidia Prazi for Dogs – Tapeworm Dewormer for Dogs and PuppiesTapeworm
Prazi (9) Tapeworm (dog and cat versions)
$39.99 View
GiarCidia Defender – Oral Flea Treatment for Dogs and CatsFleas
Defender (25) Fleas
$39.99 View