Real ChatGPT answer · index seedPHjvASmTd0IcompletePets · pet healthinformational

Why do online pet pharmacies require a prescription for Heartgard Plus when I bought similar heartworm preventatives over the counter years ago

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
Why do online pet pharmacies require a prescription for Heartgard Plus when I bought similar heartworm preventatives over the counter years ago
2 real searches · 1 real-search pass
FDA Heartgard Plus prescription only animal drug ivermectin pyrantel why prescription heartworm preventives veterinarianGoogle ↗
OBSERVEDOther / navigational
historical over the counter heartworm preventatives dogs prescription status United States FDAGoogle ↗
OBSERVEDConsequence

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigational50%ComparisonConsequence50%ReasonDefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
FDA Heartgard Plus prescription only animal drug ivermectin pyrantel why prescription heartworm preventives veterinarian Google ↗
historical over the counter heartworm preventatives dogs prescription status United States FDA Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
FDA Heartgard Plus prescription only animal drug ivermectin pyrantel why prescription heartworm preventives veterinarian
OBSERVED
Google ↗
AI Mode ↗
—Other / navigational——1x
of 1
historical over the counter heartworm preventatives dogs prescription status United States FDA
OBSERVED
Google ↗
AI Mode ↗
—Consequence——1x
of 1