Generic Milbemycin Oxime Flavor Tabs

  • Preventer Flavor Tabs are given just once a month to prevent heartworm infection in your dog.
  • Contains the same active ingredient as Interceptor (Interceptor is a registered trademark of Eli Lilly and Company*)
  • A reliable way of controlling roundworm, hookworm, and whipworm infections in dogs and puppies .
  • Flavoured tabs are palatable and most dogs will consume the tablet willingly when offered by the owner.


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Style Number: PREV-00001-CONFIG

Product Detail: Generic Milbemycin Oxime Flavor Tabs

Preventer Flavor Tabs

Preventer Flavor Tabs (milbemycin oxime) are available in four tablet sizes in color-coded packages for oral administration to dogs and puppies. Each tablet is formulated to provide a minimum of 0.23 mg/lb (0.5 mg/kg) body weight of milbemycin oxime. Milbemycin oxime consists of the oxime derivatives of 5-didehydromilbemycins in the ratio of approximately 80% A4 and 20% A3).

IndicationsPreventer Flavor Tabs are indicated for the use in the prevention of heartworm disease caused by Dirofilaria immitis, the control of adult Ancylostoma caninum (hookworm), and the removal and control of adult Toxocara canis and Toxascaris leonina (roundworms) and Trichuris vulpis (whipworm) infections in dogs and in puppies four weeks of age or greater and two pounds body weight or greater.

DosagePreventer Flavor Tabs are given orally, once a month, at the recommended minimum dosage rate of 0.23 mg milbemycin oxime per pound of body weight (0.5mg/kg).

Recommended Dosage Schedule for Dogs
Dog Weight        Preventer Flavor Tablets               Content        
2-10 lbs.                                   One tablet                                   (2.3 mg milbemycin oxime)
11-25 lbs.                                 One tablet                                   (5.75 mg milbemycin oxime)
26-50 lbs.                                 One tablet                                   (11.5 mg milbemycin oxime)
51-100 lbs.                               One tablet                                   (23.0 mg milbemycin oxime)

Dogs over 100 lbs. Are provided the appropriate combination of tablets.

Administration:Preventer Flavor Tabs are palatable and most dogs will consume the tablet willingly when offered by the owner. As an alternative, the dual-purpose tablet may be offered with food or administered as other tablet medications. Watch the dog closely following dosing to be sure that the entire dose has been consumed. If it is not entirely consumed, redose once with the full recommended dose as soon as possible.

Preventer Flavor Tabs must be administered monthly, preferably on the same date each month. The first dose should be administered within one month of the dog's first exposure to mosquitoes and monthly thereafter until the end of the mosquito season. If a dose is missed and a 30-day interval between dosing is exceeded, administer Preventer Flavor Tabs immediately and resume the monthly dosing schedule.

If Preventer Flavor Tabs replaces diethylcarbamazine (DEC) for heartworm prevention, the first dose must be given within 30 days after the last dose of DEC.

PalatabilityPalatability trials conducted in 244 dogs from 10 different US veterinary practices demonstrated that Preventer Flavor Tabs were willingly accepted from the owner by over 95% dogs. The trial was comprised of dogs representing 60 different breeds and both sexes, with weights ranging from 2.1 lbs. To 143.3 lbs., and ages ranging from 8 weeks to 15 years.

PrecautionsDo not use in puppies less than four weeks of age and less than two pounds of body weight. Prior to initiation of the Preventer Flavor Tabs treatment program, dogs should be tested for existing heartworm infections. Infected dogs should be treated to remove adult heartworms and microfilariae prior to initiating treatment with Preventer Flavor Tabs. Mild transient hypersensitivity reactions manifested as labored respiration, vomiting, salivation and lethargy, have been noted in some treated dogs carrying a high number of circulating microfilariae. These reactions are presumably caused by release of protein from dead or dying microfilariae.

SafetyMilbemycin oxime has been tested safely in over 75 different breeds of dogs, including collies, pregnant females, breeding males and females, and puppies over 2 weeks of age.

Storage: Preventer Flavor Tabs should be stored at room temperature, between 59° and 77°F (15-25°C).


* Trademark: Interceptor is a registered trademark of Eli Lilly and Company. Eli Lilly and Company is not affiliated with nor endorses Preventer Flavor Tabs.

Ratings & Reviews

Based on 10 Review(s)

Average Rating


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Most Recent Reviews

Dear Worms
Written by Aurora Pirellu
Nov 13, 2017

since this product is out in the market, ya'll worms must be afraid. Sorry but this product works and ya'll be dead! Thanks to Pet Shed for providing world class products and helping us spread the love to our babies. Muah!

Swithcing now and I am never going back!!!!
Written by loubaianmocco29
Aug 17, 2017

I was hesitant to change my Australian Shepherd's meds from Trifexis to anything else considering the possibility of issues with reactions to meds whether or not he has the gene mutation was unknown. When we got Pirate in 2013, interceptor was not available in the market whatsoever so we started off with Trifexis. We always struggled with vomiting after he took it and tried different times of the day (with a meal, hour after, etc) to no avail. I didn't want to make him sick anymore and to be honest, he didn't suffer from fleas anyway even though we are in Florida... We treat our lawns for that. I decided to look online for alternatives and noticed interceptor was available again and the name sounded familiar from his paperwork when we got him. I gave it to him without any issue, no vomiting, no lethargy. I couldn't be happier for us and him. Thanks for coming back on the market, I am never going back!

Is this a treat?
Written by Amanda
Jun 08, 2017

I was so happy that my dogs took the tabs as soon as I offered them. It made my life easier I'm just so happy.

I recommend this
Written by Linda Author
Jun 07, 2017

I have a Schnauzer. And he is 18 mo.I Have been using Interceptor Plus since she was a pup. I also use Bravetco every 10-12 wks. But I decided to try something new the reason why I switched to the Generic version, because we all know saving money isn't that easy. I am just glad to learn of this product. Thanks Pet Shed!!!!

Great Product!!!
Written by Maltese Lover
Jun 05, 2017

Easy to administer! And soooooo Cheap!!! We love Pet Shed!!! A++++++

Love it!
Written by annie bee
Jun 02, 2017

I love this product! my dog loves this too! I will order this again and again

super effective!
Written by Ginny White
Jun 02, 2017

I am very pleased with this generic product. It works great and has no side effects!

Written by Kenny Nacca
May 19, 2017

I'm giving you 5 star simply because this particular product just worked for me! It's just once a month! see that? Just once a month! You probably thinking I was overwhelmed but yet I am not i'm just simply happy that I switched. I needed to save in the future. Holy mouse everyone should discover this and I am going to tel everyone I know that uses the Interceptor. Pet Shed you're doing a good job! kepp it up!!!!

Written by Joana Marie
May 08, 2017

Who in the world wouldn't want to save money? If you can get the same benefits for a cheaper price then why not take advantage of it? This isn't a joke. I am calling all pet lovers to try and explore things that are out in the market, up for grabs without compromising our dog's safety. This generic version of the Interceptor is the one that we've been looking for. Although Pet Shed just recently carry these, yet it's worth the wait

Written by sandy peters
May 05, 2017

easiest medication I have ever had to give to my buddy and it works effectively