Oral flea treatment for small dogs and cats

Who is this product for?

Capstar is a fast-acting oral flea treatment for dogs, cats, puppies, and kittens aged 4 weeks and older, weighing between 1 and 11 kg (2 to 25 lbs). It is particularly suitable in the following situations:

• Discovery of an active infestation — you see fleas on your pet and want to eliminate them immediately
• Adopted or rescued animal — to treat quickly before introducing them home
• Return from daycare, boarding, or shows — to avoid introducing fleas into the home
• Before a car trip — to avoid infesting your vehicle
• Initial knock-down at the beginning of a monthly topical treatment program — accelerates the elimination of existing fleas
• Pet that doesn't tolerate topical products — oral alternative for sensitive skin

Key benefits

• Ultra-fast action: starts killing fleas in 30 minutes
• Eliminates 99% of adult fleas in 4 hours (dogs) or 6 hours (cats)
• Convenient oral format — no risk of licking between animals, no drying time required
• Safe for dogs, cats, puppies, and kittens 4 weeks and older
• Can be given daily until the infestation is completely resolved
• Compatible with monthly topical treatments — does not replace, complements

Active ingredient

• Nitenpyram 11.4 mg per tablet — a neuro-active insecticide that paralyzes and kills adult fleas by ingestion (when the flea bites the treated animal, it is killed quickly)

Mechanism of action

Capstar works from the inside out. Once administered orally, nitenpyram is rapidly absorbed into the bloodstream. When a flea bites your treated animal, it ingests the active product and dies within a few hours.

Unlike monthly topical treatments, Capstar has no residual effect — it is eliminated from the body within 24-48 hours. This means it does not protect against fleas that arrive the next day. For continuous protection, it must be combined with a monthly topical treatment.

Directions for use

1. Administer the tablet directly into your pet's mouth, OR hidden in a small amount of palatable food
2. Ensure the animal swallows the entire tablet
3. The animal begins to scratch intensely for 20 to 60 minutes after administration — this is normal and expected, it is the fleas reacting as they die
4. If necessary, can be repeated once daily until the infestation is resolved
5. For long-term protection, immediately start a monthly topical treatment (Advantage II, K9 Advantix II, or equivalent)

⚠️ Important — why Capstar alone is not enough

Important precautions

• For dogs and cats 4 weeks and older, weighing 1 to 11 kg (2 to 25 lbs)
• For animals over 11 kg, ask for the Capstar version for large dogs (57 mg of nitenpyram)
• Intense scratching after administration is normal — it is the fleas dying, not an allergic reaction
• Consult your veterinarian before use if your pet is pregnant, nursing, ill, or on medication
• In case of unusual adverse reaction (vomiting, marked lethargy, prolonged loss of appetite), consult a veterinarian
• Capstar does not protect against ticks, lice, mosquitoes, or other parasites — only fleas
• Keep out of reach of children

Package contents

6 fast-acting tablets. Ideal for 6 sporadic uses or for an intensive 6-day consecutive treatment in case of severe infestation.

Combine with a monthly preventative treatment

For optimal protection against fleas, combine Capstar with a monthly topical treatment suitable for your pet:

• Advantage II for cats — monthly flea protection
• Advantage II for dogs — monthly flea and lice protection
• K9 Advantix II for dogs — complete protection against fleas, ticks, mosquitoes, and lice

Storage

Store at room temperature, in its original packaging. Keep out of reach of children and animals.

Important notice: The information provided on this page is for informational purposes only and does not replace the advice of a veterinarian. If the infestation persists or if your pet shows signs of illness, consult your veterinarian.