Top nitenpyram insecticide veterinary nitenpyram powderNitenpyram is an insecticide used in agriculture and veterinary medicine to kill external parasites of livestockand pets. It is a neonicotinoid, a neurotoxin that blocks neural messages in the central nervous system of insects, causing rapid death.

Nitenpyram is used orally with dogs and cats to control fleas. After ingestion, it begins killing fleas within 30 minutes and kills all adult fleas within 4 hours. The effects of nitenpyram last approximately 24–48 hours. 

Nitenpyram powder is safe to use on puppies and kittens as young as four weeks old if they weigh at least 2 pounds(0.91 kg).Panting and excitement have been noted in cats within 2 hours of administration. In heavily infested animals, it can cause extreme itching as the fleas die.

Nitenpyram Powder does not kill insect eggs and has no long term activity. Thus, it is not effective as a long-term flea preventative. It is usually used to kill nymph and adult fleas quickly on an infested animal, and combined with a longer term flea preventative like fipronil or lufenuron to prevent reinfestation.