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Midamox (imidacloprid + moxidectin) Topical Solution for Cats

Midamox (imidacloprid + moxidectin) Topical Solution for Cats
2 to 5 lbs, 1 Pack - Teal - 1 Dose - 4/24 Dating
2 to 5 lbs, 3 Pack - teal - 0.23 mL applicators - topical solution
5.1 to 9 lbs, 1 Pack - Orange - 1 Dose - 4/24 Dating
5.1 to 9 lbs, 6 Pack - orange - 0.4 mL applicators - topical solution
9.1 to 18 lbs, 1 Pack - Purple - 1 Dose - 4/24 Dating
9.1 to 18 lbs, 6 Pack - purple - 0.8 mL applicators - topical solution
SKU : 6140-EA_-RX
Price: $10.99
Price: $10.99

Veterinarian Prescription (Rx) Required
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  • Prevention of heartworm disease
  • Kills adult flea and is indicated for the treatment of flea infestations
  • Treatment and control of ear mite infestations
  • Treatment and control of hookworms and roundworms
  • For cats and kittens 9 weeks of age and older and 2 to 5 lbs
  • Available Sizes
    • 2-5 lbs, 3 Pack (Teal)
    • 5.1-9 lbs, 3 Pack (Orange)
    • 9.1-128 lbs, 3 Pack (Purple)
How to Order Prescriptions


Midamox for Cats is a once-a-month solution to prevent heartworm disease, kill adult fleas and indicated for the treatment of flea infestations, treat and control ear mite infestations, and treat and control hookworms and roundworms. Each applicator contains 23 mg of imidacloprid and 2.3 mg of moxidectin.  This product is for cats and kittens 9 weeks of age or older and 2 to 5 lbs. 

Heartworm Prevention

For prevention of heartworm disease, Midamox for Cats should be administered at one-month intervals. Midamox for Cats may be administered year-round or at a minimum should start one month before the first expected exposure to mosquitoes and should continue at monthly intervals until one month after the last exposure to mosquitoes. If a dose is missed and a 30-day interval between doses is exceeded, administer Midamox for Cats immediately and resume the monthly dosing schedule. When replacing another heartworm preventative product in a heartworm prevention program, the first treatment with Midamox for Cats should be given within one month of the last dose of the former medication. At the discretion of the veterinarian, cats older than 6 months of age may be tested to determine the presence of existing heartworm infection before treatment with Midamox for Cats.

Flea Treatment

For the treatment of flea infestations, Midamox for Cats should be administered at one-month intervals. If the cat is already infested with fleas when the first dose of Midamox for Cats is administered, adult fleas on the cat will be killed. However, re-infestation from the emergence of pre-existing pupae in the environment may continue to occur for six weeks or longer after treatment is initiated. Cats treated with imidacloprid, including those with pre-existing flea allergy dermatitis have shown clinical improvement as a direct result of elimination of fleas from the cat. Ear Mite Treatment: For the treatment of ear mites (Otodectes cynotis),  Midamox for Cats should be administered once as a single topical dose. Monthly use of Midamox for Cats will control any subsequent ear mite infestations. Intestinal Nematode Treatment: For the treatment and control of intestinal hookworm infections caused by Ancylostoma tubaeforme (adults, immature adults and fourth stage larvae) and roundworm infections caused by Toxocara cati (adults and fourth stage larvae), Midamox for Cats should be administered once as a single topical dose.

Dosage and Administration

1. Remove the applicator from the outer pouch using scissors or fold along diagonal line to expose nick; tear back at nick. As specified in the following table, administer the entire contents of the Midamox for Cats (imidacloprid and moxidectin) applicator that correctly corresponds with the body weight of the cat.

Cat (lbs.)  Midamox for Cats  Volume (mL)  Imidacloprid (mg)  Moxidectin (mg) 
 2-5  Midamox 5 0.23  23  2.3 
5.1-9  Midamox 9  0.4  40
9.1-18*  Midamox 18  0.8  80 

*Cats over 18 lbs. should be treated with the appropriate combination of Midamox for Cats applicators. 

2. Hold the applicator upright.
3. Tap the narrow part of the applicator to ensure the contents remain within the main body of the applicator.
4. Twist or snap back the tip.
5. Part the hair on the back of the cat’s neck at the base of the head in front of the shoulder blades, until the skin is visible. Place the tip of the applicator on the skin and squeeze the applicator several times to empty its contents completely and directly onto the skin in one spot.

Do not get this product in the cat’s mouth or eyes or allow the cat to lick the application site for 30 minutes. Treatment at the base of the head will minimize the opportunity for ingestion by grooming. In households with multiple pets, keep animals separated to prevent licking of the application site. Stiff, matted hair or a damp, oily appearance of the hair may be observed at the application site on some cats. This is temporary and does not affect the safety and effectiveness of the product.


Do not dispense dose applicators without complete safety and administration information. Avoid oral ingestion. Cats may experience hypersalivation, tremors, vomiting and decreased appetite if Midamox for Cats is inadvertently administered orally or through grooming/licking of the application site. The safety of Midamox for Cats has not been established in breeding, pregnant, or lactating cats. The effectiveness of Midamox for Cats against heartworm infections (D. immitis) after bathing has not been evaluated in cats. Use of this product in geriatric patients with subclinical conditions has not been adequately studied. Several otherwise healthy, thin geriatric cats experienced prolonged lethargy and sleepiness after using this drug.

Children should not come into contact with the application site for 30 minutes after application.

Storage Information

Store below 77°F (25°C). Excursions are permitted up to 104°F (40°C) however such exposure should be minimized. Do not remove the applicator from the pouch until ready to use. Do not use after the expiry date which is stated on the carton.