The Reality of Heartworm Medicine: Why a Prescription is Mandatory
Heartworm medication is highly weight-specific. A veterinarian ensures your pet receives the exact dose necessary to be effective without being toxic. This is especially important for certain breeds, like Collies or Border Collies, which can have a genetic sensitivity (the MDR1 mutation) to ingredients like ivermectin commonly found in these drugs. Heartworm Basics where can i buy heartworm medicine over the counter
In the world of pet care, many treatments—such as certain flea and tick preventatives—can be picked up directly from a store shelf. However, heartworm medication is a notable exception. Under federal law, these drugs must be "used by or on the order of a licensed veterinarian". This requirement is not a bureaucratic hurdle but a critical safety measure rooted in the unique biology of heartworms and the drugs used to kill them. 1. The Danger of an Active Infection The Reality of Heartworm Medicine: Why a Prescription
