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Merck Safe-Guard Canine Dewormer for Dogs 6 weeks and older (4 gram x 3 sachets)

$18.33

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Merck Animal Health SKU: 040694 Barcode: 021784470421

5.0 / 5.0 based on 1 review

Safe-Guard Canine Dewormer (Fenbendazole) 4g Granules – 3 Pack

Safe-Guard Canine Dewormer (Fenbendazole) is a broad-spectrum, granulated anthelmintic treatment formulated for dogs 6 weeks and older. This 3-pack contains three 4g pouches, each designed to treat dogs weighing up to 40 lbs. With Fenbendazole 22.2% (222 mg/g) as its active ingredient, Safe-Guard offers a 3-day course that targets four of the most common intestinal parasites in dogs: tapeworms, roundworms, hookworms, and whipworms.

This veterinarian-trusted dewormer is easy to administer by mixing into food, and it delivers fast-acting and reliable protection with minimal side effects. Whether you're treating a new puppy or maintaining adult dog health, Safe-Guard ensures effective parasite control.

What Are the Benefits of Safe-Guard Canine Dewormer 3 Pack?

  • Kills 4 Major Intestinal Parasites:
    • Tapeworms (Taenia pisiformis)
    • Roundworms (Toxocara canis, Toxascaris leonina)
    • Hookworms (Ancylostoma caninum, Uncinaria stenocephala)
    • Whipworms (Trichuris vulpis)
  • 3-Day Treatment: Short and effective deworming protocol
  • Highly Palatable Granules: Mixes easily into wet or dry dog food
  • Safe for Puppies and Pregnant Dogs: Use in puppies as young as 6 weeks and pregnant females (with vet supervision)
  • Vet-Approved Ingredient: Fenbendazole has a strong safety profile and is effective against both nematodes and cestodes

What Is Fenbendazole and How Does It Work in Dogs?

Fenbendazole is a benzimidazole-class anthelmintic, which disrupts parasite metabolism by inhibiting the formation of microtubules, essential for nutrient absorption in worms. This starves and eliminates parasites from the gastrointestinal system safely and effectively.

What Is the Dosage and Administration for Safe-Guard Canine Dewormer 4g?

Always consult your veterinarian for exact dosage instructions depending on your pet's condition.

Recommended Dosage:

The daily dose of Safe-Guard is 50 mg/kg (22.7 mg/lb) of body weight for 3 consecutive days.

🐕 Dog Weight-Based Dosage Table:

Dog Weight (lbs)

Daily Pouch Size

Number of Packets per Day

11 to 20 lbs

2g packet

Not included in this pack

21 to 30 lbs

3g packet

Not included in this pack

31 to 40 lbs

4g packet

1 packet daily

41 to 50 lbs

1g + 4g packet

Mix daily

51 to 60 lbs

2g + 4g packet

Mix daily

61 to 80 lbs

2 x 4g packets

2 packets daily

Over 80 lbs

Use combo packs

Consult vet

🐾 You must dose once daily for 3 consecutive days. Always match dose with current body weight.

How Do I Administer Safe-Guard Granules?

  • Mix granules into a small amount of your dog's normal food.
  • Ensure the full dose is consumed in one meal.
  • If part of the meal is left uneaten, you may not have administered the full dose.
  • Repeat this process once daily for 3 days in a row.

How Often Should I Deworm My Dog with Safe-Guard?

Recommended Deworming Schedule:

Dog Life Stage

Deworming Frequency

Puppies (6–12 weeks)

At 6, 8, 10, and 12 weeks of age

Weaned Puppies

Monthly until 6 months old

Adult Dogs

At least twice per year

Pregnant Dogs

As advised by veterinarian

What Are the Warnings, Precautions, and Side Effects?

✔️ Safety Guidelines:

  • For canine use only
  • Not for use in puppies under 6 weeks
  • Use the appropriate dosage based on current weight
  • Keep out of reach of children
  • Store between 68°F–77°F (20°C–25°C)

⚠️ Possible Side Effects (Rare):

  • Mild diarrhea or vomiting
  • Lethargy or temporary appetite loss
  • Dead worm fragments in stool (a sign it's working)
  • Adverse reactions are rare and typically self-limiting

If symptoms persist, consult your veterinarian immediately.

Diagnosis of Parasites & Vet Involvement

Parasite diagnosis often requires laboratory testing. If your dog continues to show signs of parasitic infection (such as weight loss, poor coat, or vomiting), consult your veterinarian.

Safe-Guard is effective against Taenia pisiformis (tapeworm), but not Dipylidium caninum, which is transmitted via fleas. Use flea control alongside deworming as needed.

Product Overview Table

Feature

Description

Product Type

Canine Dewormer Granules

Active Ingredient

Fenbendazole 22.2% (222 mg/g)

Target Parasites

Roundworms, Hookworms, Whipworms, Tapeworms

Packet Count

3 x 4g packets

Treatment Duration

3 days (one packet daily)

Dog Age

6 weeks and older

Weight Treated

Up to 40 lbs per 4g packet daily

Shipping & Returns 

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Safe-Guard Canine Dewormer (Fenbendazole) 4g Packets FAQs

How do I calculate the correct dose of Safe-Guard for my dog?

Calculate your dog’s dose using 50 mg/kg (22.7 mg/lb) of body weight. Each 4g packet treats one 40-lb dog per day. Use combinations of packet sizes to match your dog’s weight for 3 consecutive days.

Can I split Safe-Guard granules into multiple meals?

It’s best to mix the entire daily dose into a single meal to ensure your dog receives the full therapeutic amount. Splitting doses may reduce effectiveness.

How often should adult dogs be dewormed with Safe-Guard?

Adult dogs should be dewormed with Safe-Guard at least twice per year, or more frequently if they are at high risk of exposure (e.g., hunting, dog parks, multi-dog households).

Should puppies be on a different deworming schedule?

Yes. Puppies between 6–12 weeks should be dewormed at 6, 8, 10, and 12 weeks. After weaning, they should be dewormed monthly until 6 months of age.

What if my dog shows signs of parasites after treatment?

If symptoms persist, consult your vet for further diagnostic testing such as a fecal exam. Your dog may have been reinfected, or may require flea control if the parasite is Dipylidium caninum (not covered by Safe-Guard).

What’s the difference between Taenia and Dipylidium tapeworms?

Taenia pisiformis, killed by Safe-Guard, is transmitted via rodents or wild rabbits, while Dipylidium caninum is spread by fleas and requires a different dewormer. Proper diagnosis helps determine the right treatment.

What do I do if my dog vomits after taking Safe-Guard?

If vomiting occurs shortly after dosing and granules are visible, re-dose. If it happens again or symptoms worsen, consult your veterinarian.

Trusted High-Authority Medical References

  1. PetMD – Fenbendazole: Safe-Guard for Dogs
  2. Merck Veterinary Manual – GI Parasites in Dogs
  3. CAPC – Parasite Prevention Guidelines
  4. PetMD – Intestinal Worms in Dogs