What is Capstar? How Capstar Works?

Fleas can make your furry friend’s life miserable. They cause constant itching, skin irritation, and even allergic reactions. That’s where Capstar for dogs and cats comes to the rescue—a fast-acting solution designed to kill fleas within hours and bring quick relief to your pet.

What is Capstar?

Capstar is a short-term oral flea treatment available in tablet form for both dogs and cats. Manufactured by trusted veterinary brands, it’s designed to eliminate adult fleas rapidly, providing immediate relief from flea infestations. It’s ideal for pet owners who want a quick fix before applying long-term flea prevention.

How Capstar Works

3.1 Fast-Acting Flea Treatment

Capstar begins working within 30 minutes of administration. Within 4 to 6 hours, it kills nearly 100% of adult fleas on your pet, making it one of the fastest flea treatments on the market.

3.2 How It Targets Fleas

The active ingredient, Nitenpyram, acts on the flea’s nervous system, leading to quick paralysis and death. Once the fleas bite your pet, they ingest Nitenpyram and are effectively eliminated.

Benefits of Using Capstar

4.1 Rapid Relief from Fleas

Capstar’s standout feature is its speed. It starts working in just 30 minutes, offering noticeable relief from itching and scratching caused by flea bites.

4.2 Safe for Both Dogs and Cats

Whether you own a small kitten, an adult cat, or a large dog, Capstar is formulated for safe use across different breeds and sizes, provided dosage instructions are followed carefully.

4.3 Convenient Oral Administration

No messy topical application, no strong odors—just a simple oral tablet your pet can take directly or with food.

4.4 Compatible with Other Treatments

Capstar can be safely used with long-term flea control products, such as NexGard, Bravecto, or Frontline, for comprehensive protection.

Capstar Ingredients and Formula

5.1 Active Ingredient: Nitenpyram

Each Capstar tablet contains Nitenpyram, an insect neurotoxin that specifically targets adult fleas without affecting your pet’s health.

5.2 How Nitenpyram Works

Nitenpyram binds to the flea’s nervous system receptors, causing over-stimulation and death within hours—yet it quickly leaves your pet’s body, minimizing side effects.

Capstar Dosage Guidelines

6.1 For Dogs

Capstar for Small Dogs (11–25 lbs): 11.4 mg tablet

Capstar for Large Dogs (25–125 lbs): 57 mg tablet

6.2 For Cats

Capstar for Cats (2–25 lbs): 11.4 mg tablet

6.3 How Often to Give Capstar

You can give one tablet per day, as needed. If fleas return, repeat the treatment, but pair it with a long-term solution for best results.

How to Administer Capstar Tablets

7.1 Direct Tablet Feeding

Most pets accept Capstar tablets directly. Offer it like a treat for quick and easy dosing.

7.2 Mixing with Food

If your pet refuses tablets, hide the pill in their favorite food—it works just as effectively when mixed with a meal.

When to Use Capstar

8.1 Signs of Flea Infestation

If your pet is constantly scratching, biting, or losing hair, fleas may be to blame. Capstar delivers immediate relief while you plan long-term prevention.

8.2 As a First Step in Flea Control

Use Capstar to eliminate existing adult fleas, then follow up with monthly spot-ons or chewable preventives to break the life cycle.

Capstar vs. Other Flea Treatments

9.1 Capstar vs. NexGard

Capstar offers faster results but only lasts 24 hours. NexGard provides monthly protection, making them complementary options.

9.2 Capstar vs. Bravecto

While Bravecto lasts up to 12 weeks, Capstar works instantly. Use Capstar for immediate relief and Bravecto for long-term defense.

9.3 Capstar vs. Frontline

Frontline is a topical treatment that takes longer to kill fleas, whereas Capstar’s oral formula delivers faster results without mess.

Possible Side Effects of Capstar

10.1 Mild Reactions

Some pets may experience temporary signs like itching, restlessness, or panting—a normal reaction to dying fleas.

10.2 When to Contact a Vet

If symptoms persist for more than a few hours or worsen, consult your veterinarian immediately.

Safety Tips and Precautions

Always choose the correct dosage for your pet’s weight.

Do not use Capstar on pets under 4 weeks old or weighing less than 2 lbs.

Store tablets in a cool, dry place away from children and animals.

How Long Does Capstar Take to Work?

Capstar starts killing fleas in 30 minutes and continues to work for 24 hours. For sustained protection, pair it with a monthly flea preventive.

How to Combine Capstar with Long-Term Flea Control

Capstar provides instant relief, but it doesn’t prevent re-infestation. To maintain a flea-free environment, combine Capstar with:

NexGard or Bravecto for ongoing protection

Environmental cleaning (vacuuming and washing pet bedding)

Regular grooming and flea combing

Conclusion

Capstar for dogs and cats is your go-to solution for fast and effective flea relief. It’s safe, easy to administer, and works within minutes—giving your furry friend comfort and peace. While it’s not a long-term preventive, it’s the perfect first step to tackle sudden flea outbreaks.

FAQs

1. What does Capstar kill besides fleas?

Capstar specifically targets adult fleas only. It does not kill flea eggs, larvae, or ticks.

2. Can I give Capstar every day?

Yes, Capstar can be given daily if fleas persist. However, pair it with a monthly flea preventive for long-term results.

3. How long does Capstar last?

Each dose works for 24 hours, killing all adult fleas present on your pet during that period.

4. Is Capstar safe for puppies and kittens?

Yes, Capstar is safe for puppies and kittens over 4 weeks old and weighing more than 2 lbs.

5. Can I use Capstar along with topical flea treatments?

Absolutely. Capstar can be used alongside topical treatments like Frontline or Advantage for comprehensive flea control.