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

The people behind GiarCidia

A small team in Temecula, California.

  • Frank BustosFrank Bustos Founder & CEO
  • Clara G.Clara G. CFO
  • Mani AliMani Ali Project Consultant
  • Fatima I.Fatima I. Brand Manager
  • Xavier D.Xavier D. Production Designer
  • Saul M.Saul M. Logistics Coordinator
  • Omar P.Omar P. Lab Technician

What we stand for.

Every bottle
  • Made in the USA in an FDA-approved facility
  • Flavored liquids, dosed by weight
  • Flavor guarantee: a free swap if refused
  • Label wording, never guesswork

Questions, answered.

How can my dog or cat become infected with worms?

Dogs and cats can pick up worms surprisingly easily during normal daily activities. The main routes are contact with contaminated poop or soil, infected prey or fleas, and from their mother when they are very young.

How can I tell if my dog or cat has worms or parasites?

Common signs are weight loss or poor growth (especially in puppies and kittens), even if they are eating normally or seem extra hungry. Also a dull, poor-quality coat, low energy or weakness, because parasites steal nutrients. Diarrhea, mucus, blood, vomiting and a bloated belly are also signs.

What types of worms can my dog or cat get?

Dogs and cats can get several kinds of worms and a few non-worm intestinal parasites. Not every pet will meet all of them, but prevention usually targets the whole group. Tapeworms, roundworms, hookworms, pinworms, lungworms and whipworms are the types they can be infected with, and GiarCidia has a liquid for them.

Is there a way to prevent my dog or cat from getting worms?

Prevention is mainly regular parasite treatment plus good hygiene. Pick up dog poop promptly (ideally daily in your yard and straight away on walks) and clean litter boxes at least once a day to remove eggs and larvae before they spread. Regularly wash food and water bowls, bedding and toys, and make sure everyone at home, especially children, washes their hands after handling pets, soil or litter and before eating.

What we make

Each GiarCidia liquid is made for something different.

GiarCidia CARE – Giardia & Coccidia Treatment for Dogs and Cats, with ProbioticsBest seller
CARE (10) Giardia + Coccidia
$62.99 View
GiarCidia ToltraBoss – Toltrazuril 5% Coccidia Treatment for Dogs and CatsCoccidia
ToltraBoss (15) Coccidia only
$42.99 View
GiarCidia Zap-Wormer – Liquid Dewormer for Dogs and Cats, 6 Types of WormsWorms
Zap-Wormer (24) 6 types of worms
$58.99 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
  • ★★★★★Breeder

    “this product does really work for worms and giardia”

    First time user and I have found out this product does really work for worms and giardia. … I plan on continuing to purchase for future litters!

    Amanda WenningerGoogle reviewGoogle review
  • ★★★★★

    “treats both Giardia and Coccidia”

    I'm new to Giarcidia and excited to find a product that treats both Giardia and Coccidia! … Frank was very helpful and professional. I'll definitely be purchasing more from this company!

    Sara JohnsonGoogle reviewGoogle review
  • ★★★★★Puppies

    “Perfect stools on Pomeranian puppies”

    Great product! Perfect stools on Pomeranian puppies, used prophylactically with no issues! Simplifies using one product and the puppies enjoy the taste!

    Ann CoughlinGoogle reviewGoogle review
  • ★★★★★Breeder

    “used the dewormer for about 5 litters now”

    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 ServicesGoogle reviewGoogle review
  • ★★★★★Rescue

    “I have been doing cat rescue for 20 years”

    The giarcidia dewormer is the best all in one dewormer I have ever used. I have been doing cat rescue for 20 years. This is the only dewormer I use since I was lucky enough to find this great product!

    Lisa RamirezGoogle reviewGoogle review
  • ★★★★★Litters

    “This product is a game changer.”

    This product is a game changer. We purchased 1 bottle of GiarCidia and the results were amazing. Fast acting, we're purchasing 2 more bottles to keep on standby for our next litter. …

    Brian SimmonsGoogle reviewGoogle review
  • ★★★★★Rescue

    “for every cat and kitten that we intake”

    … Since that first bottle of zap wormer I've been a loyal customer and recommend it to everyone I encounter! I also religiously use their combo coccidia and Giardia treatment with the dewormer for every cat and kitten that we intake.

    Sharlie WorkmanGoogle reviewGoogle review
  • ★★★★★Breeder

    “to our puppy families and fellow breeders”

    Products and support are excellent! I highly recommend Giarcidia to our puppy families and fellow breeders.

    Katie StoutGoogle reviewGoogle review
  • ★★★★★Repeat customer

    “My 3rd time ordering. I have 7 dogs!”

    Quality product. Fast shipping. Amazing communication. My 3rd time ordering. I have 7 dogs!

    Shari SloaneGoogle reviewGoogle review

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