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Interceptor Spectrum Tasty Chews for Dogs 2-8 Lbs (Up to 4 Kg)
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Choose based on your dog's weight
Description
Interceptor Spectrum Tasty Chews for Dogs 2-8 Lbs (Up to 4 Kg) is a monthly oral chewable tablet combining milbemycin oxime and praziquantel for broad-spectrum internal parasite prevention and control. Each tablet in this variant delivers 2.3 mg milbemycin oxime and 22.8 mg praziquantel, calibrated for dogs weighing between 2 and 8 lbs (up to approximately 4 kg). The product is approved for use in puppies and dogs from six weeks of age onwards.
Recommended for
Dogs and puppies weighing 2 to 8 lbs (up to 4 kg) from 6 weeks of age.
Indication/Coverage
For dogs suffering from, or at risk from, mixed parasitic infections, Interceptor Spectrum Tasty Chews addresses the following indications:
- Heartworm prevention: Prevention of heartworm disease caused by Dirofilaria immitis (larval stages, administered monthly to interrupt larval development before adult establishment).
- Roundworm treatment: Treatment and control of adult Toxocara canis and Toxascaris leonina
- Hookworm treatment: Treatment and control of adult Ancylostoma caninum
- Whipworm treatment: Treatment and control of adult Trichuris vulpis
- Tapeworm treatment: Treatment and control of adult tapeworm infections caused by Taenia pisiformis, Echinococcus multilocularis, and Echinococcus granulosus.
Key Benefits
The following clinical properties distinguish this formulation across the parasite types it targets.
- Early-age eligibility: Labeled for use from six weeks of age and 2 lbs body weight, covering the window when puppies are most vulnerable to gastrointestinal parasite burdens before broader weight-band products become applicable.
- Dual active compounds: The combination of milbemycin oxime (a macrocyclic lactone) and praziquantel (a pyrazinoisoquinoline) allows a single monthly tablet to address both nematode and cestode infections simultaneously, rather than requiring separate dewormers.
- Systemic nematode clearance: Milbemycin oxime acts systemically, disrupting glutamate-gated chloride ion channels in invertebrate nerve and muscle cells to eliminate roundworm, hookworm, and whipworm infections at the adult stage.
- Tapeworm efficacy: Praziquantel causes tegumental disruption and increased permeability in tapeworm cells, leading to paralysis and expulsion of adult Taenia pisiformis, multilocularis, and E. granulosus.
- Heartworm prevention confirmed: In controlled laboratory studies, six consecutive monthly doses achieved 100% effectiveness against experimentally induced immitis infection in dogs.
- Chewable palatability: In a field acceptability study involving 115 client-owned dogs, 108 of 115 dogs accepted the chewable from the owner’s hand without requiring placement in a bowl or mouth, reducing the administration burden for small-breed dogs that resist tablet pilling.
- Once-monthly dosing schedule: A single chewable administered once every 30 days maintains heartworm prevention coverage and suppresses gastrointestinal parasite reestablishment across the full treatment cycle.
Caution
Hazards to Humans
Not for human use. Keep out of reach of children. Wash hands thoroughly after handling the chewable tablet. Avoid contact with eyes. Do not store near food or animal feed.
Hazards to Domestic Animals
For oral administration only. This variant is labeled for dogs and puppies weighing 2 to 8 lbs (up to 4 kg) from six weeks of age. Do not administer to dogs below 2 lbs or younger than six weeks. Use with caution in debilitated, aged, pregnant, or nursing animals, and consult a veterinarian prior to administration in these cases. Individual sensitivity to milbemycin oxime or praziquantel may occur in rare instances. Consult a veterinarian before concurrent use with other antiparasitic agents or medications that may interact with macrocyclic lactones.
Possible Side Effects
Monitor your dog in the hours following each monthly administration. Adverse reactions at the labeled dose were not reported in field or laboratory studies; however, overdose safety studies identified the following dose-dependent signs.
- Gastrointestinal reactions: Vomiting occurred in some dogs across multiple safety studies; one dog in the field acceptability trial vomited immediately after accepting the chewable. Soft feces and diarrhea were also noted, with similar incidence across treatment and control groups at standard dosing.
- Neurological signs (at supratherapeutic doses): Ataxia, decreased activity, salivation, and tremors were observed in safety studies at 3 and 5 times the maximum label dose. These signs appeared within the first 24 hours post-dosing and resolved spontaneously. At the labeled 1x dose, one instance of ataxia was recorded in a single animal across the puppy safety cohort.
- Systemic signs: One dog in a tapeworm efficacy study exhibited abnormal leaning behavior within 24 hours of treatment at the standard dose. This finding was isolated and not reproduced across other study cohorts.
If any of these signs appear after administration at the labeled dose, contact a veterinarian promptly.
Direction
Interceptor Spectrum Tasty Chews is administered orally, once per month. Offer the chewable tablet directly from the hand or place it in the dog's food bowl; most dogs accept it without assistance. Separate multiple pets at feeding time to prevent one animal from consuming another's dose. Do not break or split the tablet for use in another dog or for future doses, as this may alter the correct dosage intended for dogs in this weight range.How to Open
- Fold along the perforated lines on the blister pack and tear off a single dose unit.
- Look at the back or edges of the unit to find one of the corners.
- Use your fingers to lift and peel the backing completely away from the corner, rather than pressing the soft chewable through the foil.
- Gently lift the intact chewable out of the plastic pocket and give it to your dog immediately after opening.
How to Administer
- Confirm the dog's body weight on the day of dosing to verify the 2-8 lbs weight band remains applicable.
- Offer the chewable tablet from your hand for approximately 60 seconds. If accepted, the dose is complete.
- If the tablet is not taken from the hand, place it in the dog's food bowl alongside a small amount of food for 60 seconds.
- If still not eaten from the bowl, place the tablet directly in the dog's mouth and hold the mouth closed briefly until swallowed.
- Observe the dog for vomiting during the 10 to 30 minutes following administration. If the tablet is expelled within this window, consult your veterinarian regarding whether re-dosing is appropriate.
Storage
- Store out of reach of children. Keep below 30°C (86°F).
- Do not use after the expiry date printed on the packaging; the expiry date refers to the last day of the stated month.
- Store in the original blister packaging to protect tablets from moisture and physical damage.
Tips for Using
The following guidance applies specifically to dogs in the 2 to 8 lbs weight range, where administration errors carry a proportionally greater impact on the delivered dose.- Test for heartworms first: Always consult your vet for a heartworm blood test to ensure your dog is negative before administering the first dose.
- Give with a meal: Administer the chewable tablet with or immediately after a full meal to ensure complete absorption of both active ingredients.
- Encourage proper chewing: Break the tablet into smaller pieces or mix it into a small food portion to force chewing and prevent swallowing whole.
- Monitor after dosing: Watch your dog closely during the 10 to 30 minutes to guarantee they do not spit out, hide, or vomit the chew.
- Redose if lost: Give a full replacement dose immediately if your dog vomits or fails to swallow the entire chewable tablet.
- Maintain a 30-day schedule: Administer the medication on the exact same calendar day every month to ensure uninterrupted, year-round protection against parasites.
- Handle short delays quickly: Give the missed dose immediately if you are under 15 days late, then resume your normal monthly schedule.
- Retest after long delays: Do not give the medication if you missed the dose by more than 60 days without getting a new vet test.
- Store at room temperature: Keep the blister pack in a cool, dry place between 59°F and 77°F (15°C–25°C) to prevent the active ingredients from degrading.
| Product Name | Interceptor Spectrum Tasty Chews for Dogs 2-8 Lbs (Up to 4 Kg) |
|---|---|
| Target Weight | 2 to 8 lbs (up to approximately 4 kg) |
| Packaging Color | Orange |
| Active Ingredients | Milbemycin oxime: 2.3 mg, Praziquantel: 22.8 mg |
| Application Type | Flavored chewable tablet |
| Administration Route | Oral administration |
| Pack Sizes Available | 3 or 6 chewable tablets per package |
| Treatment Frequency | Once monthly |
| Minimum Age | 6 weeks |
| Effective Against | – Heartworm (Dirofilaria immitis, prevention) |
| Storage | Below 30°C (86°F) |
| Manufacturer | Elanco |
FAQs
1. My dog weighs exactly 2 lbs. Is the 2-8 lbs tablet appropriate?
The 2-8 lbs tablet (2.3 mg milbemycin oxime / 22.8 mg praziquantel) is appropriate at exactly 2 lbs. Puppies that have not yet reached 2 lbs on the treatment day should not receive this tablet; consult a veterinarian to determine whether dosing should be deferred. Weigh on the day of dosing to confirm the correct tablet size before administration. Dogs exceeding 8 lbs should move to the next weight-band tablet. Interceptor Spectrum is available in 3 other weight-based variants:
- Interceptor Spectrum Tasty Chews for Dogs 8-25 Lbs (4-11 Kg)
- Interceptor Spectrum Tasty Chews for Dogs 25-50 Lbs (11-22 Kg)
- Interceptor Spectrum Tasty Chews for Dogs 50-100 Lbs (22-45 Kg)
2. Is 2.3 mg milbemycin oxime safe for a dog at the lower end of this weight range?
At the labeled minimum dose of 0.23 mg/lb (0.5 mg/kg), a 2 lb dog receives 2.3 mg milbemycin oxime, which falls within the established safe and effective range confirmed by FDA safety studies. In repeat-dose safety studies at 1x the label dose, clinical signs were rare and transient. Dogs with a history of neurological conditions or known MDR1 gene mutation (common in collies and related breeds) should be assessed by a veterinarian before milbemycin oxime administration.
3. My dog just moved from the under-2 lbs range to 2 lbs. Do I switch to this tablet immediately?
Once the dog reaches 2 lbs on a dosing day, the 2-8 lbs tablet becomes the appropriate size. Do not continue without a tablet if the dog has passed the minimum threshold; a missed month creates a gap in heartworm prevention coverage. Confirm weight on the actual dosing day before switching.
4. What should I do if I miss a monthly dose?
Administer the missed dose as soon as you realize the gap, then resume the regular monthly schedule from that new date. Do not double-dose to compensate. If the gap in dosing spans a period of potential mosquito exposure, consult a veterinarian regarding whether a heartworm antigen test is warranted before continuing preventive treatment.
5. Does Interceptor Spectrum treat tapeworms in small dogs?
Yes. The praziquantel component (22.8 mg per tablet) is effective against adult Taenia pisiformis, Echinococcus multilocularis, and Echinococcus granulosus at the 2.28 mg/pound (5 mg/kg) dose. FDA studies confirmed 100% efficacy against all three tapeworm species at a single dose. Praziquantel alone, without milbemycin oxime, does not treat hookworm infections.
6. Can I give Interceptor Spectrum to a 6-week-old puppy in this weight band?
The product is labeled for puppies six weeks of age and older, provided body weight is at least 2 lbs. In a dedicated puppy safety study, Interceptor Spectrum was well-tolerated in Beagles from six weeks of age at the standard labeled dose. Administer on a feeding day rather than a fasted day to minimize gastrointestinal upset.
7. Does Interceptor Spectrum cover heartworm if I start in the middle of mosquito season?
Begin dosing within one month of the dog’s first seasonal mosquito exposure. FDA studies demonstrated that six consecutive monthly doses achieve 100% heartworm prevention efficacy; fewer than six consecutive doses did not reach 100% effectiveness in controlled laboratory conditions. Continue dosing until at least six months after the last seasonal mosquito exposure.
8. My 3 lb dog vomited after the first dose. Should I re-dose?
Do not re-dose without veterinary guidance. Vomiting within 30 minutes of administration may indicate the full dose was not absorbed; however, a second tablet given on the same day would substantially exceed the weight-adjusted dose for a dog at the lower end of this weight band. Contact your veterinarian to determine whether re-dosing is appropriate and safe given the dog’s current weight and condition.
9. Can Interceptor Spectrum be given alongside flea treatments?
Interceptor Spectrum does not carry flea or tick coverage. It can be used alongside topical or oral flea and tick products in most cases; however, consult a veterinarian before combining any antiparasitic products, particularly in small dogs under 8 lbs where cumulative systemic exposure is a proportionally greater consideration.
10. How do I know if the tapeworm coverage is working in my small dog?
Tapeworm segments or eggs may appear in the stool before and shortly after treatment, as praziquantel causes rapid tapeworm disintegration and expulsion. Persistent segment shedding beyond one to two weeks after dosing, or signs of weight loss and abdominal discomfort, should prompt a veterinary fecal examination to assess whether reinfestation has occurred or a different tapeworm species is involved.
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