Capstar® Flea Tablets for Cats and Dogs

What Capstar® Is and How It Works

Capstar for Cat/Dog is an oral flea tablet used for rapid knockdown of adult fleas on cats and dogs. It contains nitenpyram, a fast‑acting neonicotinoid. The tablet is given by mouth. It starts killing adult fleas within 30 minutes. Many pet owners seek capstar without insurance for straightforward, same‑day relief from biting fleas.

CanadianInsulin is a prescription referral service. Prescriptions are verified with your clinic, and orders are filled by licensed Canadian pharmacies. We partner only with licensed, vetted pharmacies to ship authentic brand medications at value‑focused pricing and a broad selection.

Capstar targets the flea nervous system. After ingestion, fleas are exposed during a blood meal. The result is quick paralysis and death of adult fleas. It provides short‑term control. It does not act as a long‑term monthly preventive. Many households pair Capstar with a longer‑acting flea control product and environmental cleaning. Capstar is available for cats and dogs, including small dog & cat flea treatment variants. It is commonly sold in multi‑packs such as capstar 6 tablets or a capstar 6 pack for convenient coverage across several days or multiple pets.

Capstar is over the counter in many regions. Always check the package for the correct animal type and weight range before use.

Dosage and Usage

• Confirm the correct product for species: cat or dog. Do not interchange.
• Select the strength that matches the pet’s weight range per label.
• Administer one oral tablet, with or without food.
• Observe for increased scratching as fleas die. This is expected shortly after dosing.
• Capstar may be given once daily as needed for adult flea knockdown.
• Use alongside a long‑acting flea preventive if ongoing protection is required.
• For multiple pets, treat all animals in the home as advised on product labels.
• Wash pet bedding and vacuum carpets and upholstery to reduce reinfestation.
• Missed dose: If a dose is skipped, give the next dose when remembered. Resume the usual pattern if still needed.
• Do not split or crush tablets unless the label allows and the full dose is taken at once.
• Do not exceed labeled dosing frequency.
• Consult a veterinarian if the pet is very young, underweight, pregnant, nursing, or has a seizure history.

• Storage temperature: 20–25°C (68–77°F). Short excursions 15–30°C (59–86°F) are acceptable.
• Keep tablets in the original blister until use to protect from moisture.
• Store in a dry place away from direct sunlight.
• Keep out of reach of children and animals.
• When traveling, carry tablets in a sealed pouch with the labeled carton or insert.
• Avoid leaving tablets in a parked car or any hot environment.
• Do not use tablets past the printed expiry date.
• For ordering and travel needs, plan enough tablets for each pet.

Benefits and Savings

Capstar offers very fast relief. It begins killing fleas within 30 minutes. Many dogs show near‑complete adult flea kill within hours. Cats also see rapid improvement the same day. The small, single‑dose tablet is convenient. It can be used with many routine preventives. It helps break the immediate biting cycle while long‑acting products take effect.

Households value the flexibility. Dose on any day fleas are seen. Multi‑pet families can keep a capstar 6 tablets pack on hand to cover several pets or repeat daily use during heavy infestations. Customers appreciate clear labeling for capstar dog and cat variants.

Many customers save 60–80% vs typical U.S. prices. This helps those comparing capstar cost for multi‑pet homes or capstar without insurance purchases. For extra value, see our promotions page for current offers, including any capstar coupon if available.

Side Effects and Safety

• Dogs: may experience temporary lethargy, itching, panting, vomiting, diarrhea, or decreased appetite.
• Cats: may show transient hyperactivity, vocalization, itching, salivation, vomiting, or diarrhea.
• As fleas die, increased scratching or grooming can occur for a short period.
• Allergic reactions are uncommon. Seek veterinary care if swelling, hives, or collapse appear.
• Seizures are rare. Use caution in pets with a seizure history; consult a veterinarian first.
• Use the correct strength for the pet’s weight and species to reduce adverse effects.

Serious reactions are uncommon but possible. Stop use and contact a veterinarian if severe vomiting, persistent diarrhea, weakness, tremors, or seizures occur. Keep all flea products out of reach of children. If accidental ingestion by a person occurs, seek medical attention and provide the package information.

Onset Time

Capstar acts quickly. In most dogs, adult fleas begin to die within 30 minutes, with substantial reduction within about 4 hours. In cats, visible improvement often appears the same day, typically within 6 hours. Relief from biting begins as the adult flea population falls. Environmental stages (eggs, larvae, pupae) persist, so ongoing cleaning and a monthly preventive help sustain control.

Compare With Alternatives

Capstar is designed for rapid, same‑day adult flea knockdown. It complements, rather than replaces, longer‑acting preventives. Oral monthly products using spinosad or isoxazolines provide sustained protection. Topical spot‑ons with fipronil or imidacloprid offer multi‑week control and may target multiple life stages. A veterinarian can help match product type to household needs, pet age, and any concurrent conditions.

Households often use Capstar at the start of a flea program. The rapid knockdown reduces immediate discomfort while a monthly oral or topical preventive builds coverage. Environmental steps, such as vacuuming and washing bedding, further reduce reinfestation pressure. Choosing between oral and topical formats depends on handling ease, bathing frequency, and pet tolerance.

Combination Therapy

• Pair Capstar with a monthly oral preventive to maintain control after initial knockdown.
• Use Capstar with a topical spot‑on if an oral monthly is not preferred.
• Combine with environmental control: vacuuming, laundering pet bedding, and treating hotspots as advised on product labels.
• In multi‑pet homes, treat all animals with appropriate products to prevent cycling.
• Space different products according to label guidance to avoid overlap in application sites or timing.

Patient Suitability and Cost‑Saving Tips

Capstar is intended for cats and dogs that meet the labeled age and weight minimums. Many labels allow use in kittens and puppies at 4 weeks of age and at least 2 lb (0.9 kg). Always confirm the package directions for the exact product strength. Pets with a seizure history, severe illness, or those on multiple medications may require veterinary guidance before use.

Capstar cats and dogs products are species‑specific, so select the correct variant. Use the small dog & cat flea treatment only within its weight range. Pregnant or nursing animals should be assessed per the label and veterinary advice. If fleas persist, check the environment and all household pets for coordinated control.

To stretch value, consider a capstar 6 pack when multiple pets need quick relief. Multi‑month planning helps avoid urgent store trips. Set simple reminders to reorder before running out. For online convenience, add your items to the cart, complete checkout, and select prompt, express shipping. Bulk purchase planning can reduce per‑tablet handling costs across a season.

Authoritative Sources

Capstar manufacturer product page (Elanco)

FDA approved animal drug listing for nitenpyram (Capstar)

Health Canada Drug Product Database

Order Capstar from CanadianInsulin: add to cart, upload your prescription, and we ship with prompt, express, cold‑chain handling.

This page is educational and does not replace professional veterinary advice. Always read the package insert and consult a licensed veterinarian with questions about your pet’s care.