Giving preventative to a dog that already has adult heartworms can cause a severe, potentially fatal reaction as the larvae die off.
A veterinarian must confirm your pet's current heartworm status via a blood test before starting or renewing a prescription.
Known for a massive selection and excellent customer service.
You cannot legally buy legitimate heartworm prevention in the U.S. without a vet’s authorization. This regulation exists because:
Avoid sites that claim "no prescription required" for U.S. customers. Buying from unverified sources carries significant risks: How to Avoid the Disasters of Counterfeit Pet Prescriptions
Look for pharmacies that are LegitScript or Vet-VIPPS (Veterinary-Verified Internet Pharmacy Practice Sites) accredited.
Giving preventative to a dog that already has adult heartworms can cause a severe, potentially fatal reaction as the larvae die off.
A veterinarian must confirm your pet's current heartworm status via a blood test before starting or renewing a prescription.
Known for a massive selection and excellent customer service.
You cannot legally buy legitimate heartworm prevention in the U.S. without a vet’s authorization. This regulation exists because:
Avoid sites that claim "no prescription required" for U.S. customers. Buying from unverified sources carries significant risks: How to Avoid the Disasters of Counterfeit Pet Prescriptions
Look for pharmacies that are LegitScript or Vet-VIPPS (Veterinary-Verified Internet Pharmacy Practice Sites) accredited.