Dr. Tiffany Delacruz, DVM • Chief Executive Officer, RexVet • 2026-07-04 • 6 min read
Get Interceptor Plus Prescription Online — $64.99 FL, NY & VA Licensed Vets | RexVet
Interceptor Plus for dogs in Florida, New York and Virginia. Licensed DVMs prescribe the monthly heartworm chewable by $64.99 video when suitable.
Medically reviewed by Dr. Tiffany Delacruz, DVM
Book your $64.99 online vet visit now
Interceptor Plus provides broader worm coverage than Heartgard Plus — the choice when your dog has whipworm or tapeworm exposure risk.
Interceptor Plus vs Heartgard Plus — how to choose
- Heartgard Plus: heartworm + roundworm + hookworm (3 species)
- Interceptor Plus: heartworm + roundworm + hookworm + WHIPWORM + TAPEWORM (5 species)
- Choose Interceptor Plus if: your dog hunts, eats wildlife, has had tapeworm before, has whipworm exposure, or is in a boarding/kennel environment
- Choose Heartgard Plus if: standard low-risk household pet with routine flea prevention
- Both are equivalent for heartworm prevention
- Interceptor Plus is typically slightly more expensive
What Interceptor Plus protects against
- Heartworm disease (Dirofilaria immitis)
- Roundworms (Toxocara canis, Toxascaris leonina)
- Hookworms (Ancylostoma caninum, Uncinaria stenocephala)
- Whipworms (Trichuris vulpis) — Heartgard Plus does NOT cover these
- Tapeworms (Dipylidium caninum, Taenia pisiformis, Echinococcus multilocularis)
- Does NOT protect against fleas or ticks — pair with a flea/tick product
What to have ready for your video visit
- Your dog's weight
- Date and result of last heartworm test
- History of tapeworm segments (rice-like segments near tail base)
- Prior whipworm or intestinal parasite diagnosis
- Current parasite prevention product
- Your dog's breed
Dosing by dog weight
- 2-8 lbs: 2.3 mg / 22.8 mg chewable (green box)
- 8.1-25 lbs: 5.75 mg / 57 mg chewable (yellow box)
- 25.1-50 lbs: 11.5 mg / 114 mg chewable (blue box)
- 50.1-100 lbs: 23 mg / 228 mg chewable (white box)
- One chewable per month, same day each month
Side effects and safety
- Very well tolerated — good safety profile
- Uncommon: vomiting, diarrhea, decreased appetite, lethargy
- Rare: hypersensitivity reactions
- Safe for MDR1-positive dogs at labeled dose
- Safe for pregnant and breeding dogs
Cost transparency
$64.99 for the RexVet video visit. A 6-pack of Interceptor Plus typically costs $60-$90 depending on dog weight. Total annual cost: ~$130-$195 medication + $64.99 visit = $195-$260 per year for heartworm + 4-species worm prevention. Great value for hunting dogs, farm dogs, and dogs with whipworm exposure.
About Dr. Tiffany Delacruz — Chief Executive Officer
Our video visits are led by Dr. Tiffany Delacruz, DVM, and our licensed DVM team. Dr. Tiffany is licensed to practice veterinary medicine in Florida, New York and Virginia. She helps FL/NY/VA dog parents choose between Heartgard Plus and Interceptor Plus based on lifestyle and risk factors.
Emergency signals
When to contact a veterinarian
- Chronic diarrhea despite Interceptor Plus — reassess for resistant parasites
- Missed multiple doses of heartworm prevention — re-testing may be needed
- Weight loss or poor coat despite deworming — broader workup needed
- MDR1-positive breed — confirm labeled dose
Frequently asked questions
Can an online vet prescribe Interceptor Plus?
If the veterinarian decides it is appropriate after a video visit, they can prescribe it where state rules allow. A negative heartworm test is required first.
Interceptor Plus vs Heartgard Plus — which does my dog need?
Interceptor Plus if your dog hunts, eats wildlife, has had tapeworms, has whipworm exposure, or is in boarding/kennel environments. Heartgard Plus for standard low-risk household pets. Both prevent heartworm equally well.
How much does Interceptor Plus cost?
The RexVet video visit is $64.99. A 6-pack of Interceptor Plus typically costs $60-$90 filled at Chewy, Costco Pet Pharmacy, or local vet retail. Annual cost: ~$260 for full-year worm and heartworm protection.
Do I still need flea and tick prevention with Interceptor Plus?
Yes — Interceptor Plus does NOT protect against fleas or ticks. Pair it with a flea/tick product like NexGard, Bravecto, or Simparica (though Simparica Trio combines both into one chewable).
Is Interceptor Plus safe for my Collie or Aussie Shepherd?
Yes at labeled dose. Interceptor Plus is safe for MDR1-positive dogs (Collies, Aussies, Shelties, Old English Sheepdogs, Whippets) at the standard labeled dose.
How do I know if my dog needs whipworm coverage?
Whipworm is common in soil-contaminated environments — dog parks, kennels, rural yards, hunting fields. Any dog with a history of chronic diarrhea, weight loss despite eating, or diagnosis of whipworm should stay on Interceptor Plus rather than Heartgard Plus.
Which states can RexVet prescribe Interceptor Plus in?
Florida, New York, and Virginia — where our vets are licensed. Outside these three states, our vets cannot legally prescribe.
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About the author
Dr. Tiffany Delacruz, DVM
Chief Executive Officer, RexVet
Licensed veterinarian and CEO of RexVet (Rex Vets Inc.). Practicing across Florida, New York, and Virginia via licensed telehealth. Reviews every clinical article on RexVet before publication.