Nitenpyram
Also known as: Capstar, Program, Bestguard, Bob Martin Flea Tablets, Johnson's 4 Fleas
> **Important Note:** This medication kills adult fleas very quickly but does not kill flea eggs or larvae. It is usually used in combination with other products (like insect growth regulators) that will control those immature forms of fleas. * You may notice your pet scratching frantically for a short period after giving the pill. This is a normal, temporary reaction caused by the fleas moving erratically as they die, not a side effect of the medication itself. * Best dosed after a meal to increase absorption, though it can be given with or without food. * All animals in the household should be treated simultaneously to prevent re-infestation. * Keep tablets out of reach of children.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- Flea adulticide (2-25 lb / 0.9-11.36 kg)
- Flea infestation
- Maggots
- Flea adulticide (2-25 lb / 0.9-11.36 kg)
- Flea adulticide (25-125 lb / 11.36-56.8 kg)
- Flea infestation
How it is given
Possible side effects
- Transient pruritus (scratching) due to dying fleas
- Transient pruritus (scratching/itching) as fleas die
- Vomiting (rare)
- Lethargy (rare)
- Panting or vocalization (rare, secondary to flea death)
Cautions & contraindications
- Animals under 2 pounds of body weight
- Animals under 4 weeks of age
- Animals weighing less than 1 kg
- Not labeled to be used in animals under 2 pounds of body weight or under 4 weeks of age. Probably safe to use in breeding, pregnant, or lactating animals.
Frequently asked questions
What is Nitenpyram used for in pets?
> **Important Note:** This medication kills adult fleas very quickly but does not kill flea eggs or larvae. It is usually used in combination with other products (like insect growth regulators) that will control those immature forms of fleas. * You may notice your pet scratching frantically for a short period after giving the pill. This is a normal, temporary reaction caused by the fleas moving erratically as they die, not a side effect of the medication itself. * Best dosed after a meal to increase absorption, though it can be given with or without food. * All animals in the household should be treated simultaneously to prevent re-infestation. * Keep tablets out of reach of children.
Is Nitenpyram safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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