NexGard vs Seresto:Which is more popular?
In September 2026, NexGard had more branded searches than Seresto among flea, tick and worm treatment brands in New Zealand. NexGard had about 3,210 branded searches, while Seresto had 320. NexGard made up 21.6% of all flea, tick and worm treatment brand searches we track, and Seresto accounted for 2.2%. When we asked ChatGPT and Google AI Overviews about flea, tick and worm treatment brands, NexGard appeared in all five answers and Seresto in one. NexGard was mentioned before Seresto in every answer.
Who do people search for more?
NexGard, about 10 searches for every 1 for Seresto
Who does AI mention more?
NexGard, mentioned in every answer we collected
Who does AI recommend more?
NexGard, named ahead of Seresto in every answer
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Top flea, tick and worm treatment brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, NexGard appeared in all five answers. Seresto was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. NexGard was listed before Seresto in every answer.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Bravecto5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers- NexGard5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Simparica4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Drontal3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers- Advocate2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Frontline1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Seresto1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Capstar0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers- Comfortis0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about flea, tick and worm treatment brands
5 answers
Asked ChatGPT
“Which flea, tick and worm treatment brand should I buy in New Zealand?”
Asked ChatGPT
“What are the best flea, tick and worm treatment brands in New Zealand?”
Asked ChatGPT
“What's the best flea, tick and worm treatment brand in New Zealand for protecting pets from parasites?”
Searched Google, AI Overview
“tick treatment for dogs”
Searched Google, AI Overview
“worm treatment for cats”
Brands are shown in the order each answer named them. The survey took place in New Zealand on October 21, 2026.
Is NexGard or Seresto more popular in search?
This chart shows how often people search Google for NexGard and Seresto by name. Each line represents a brand's share of searches for all nine flea, tick and worm treatment brands we track, month by month, from searches in New Zealand.
Share of searches by month for NexGard, Seresto. The figures are in the table below the chart.
View monthly share of searches table
| Month | Bravecto | NexGard | Drontal | Simparica | Advocate | Frontline | Capstar | Seresto | Comfortis |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 34.4% | 27.6% | 9.3% | 10.9% | 5.5% | 5% | 3.5% | 3.1% | 0.7% |
| Nov 2025 | 33.7% | 24.4% | 8.3% | 11.1% | 6.1% | 6.7% | 4.7% | 4.4% | 0.62% |
| Dec 2025 | 37.2% | 20.9% | 9.4% | 8.6% | 6% | 6.2% | 6.4% | 4.6% | 0.67% |
| Jan 2026 | 39.6% | 19.6% | 10.1% | 8.5% | 6% | 6.6% | 5.8% | 3.2% | 0.54% |
| Feb 2026 | 36.7% | 20.8% | 10.2% | 8.3% | 5.9% | 7.7% | 7% | 2.9% | 0.41% |
| Mar 2026 | 34.6% | 20% | 10.5% | 8.6% | 6.2% | 10.9% | 5.9% | 2.6% | 0.64% |
| Apr 2026 | 33.8% | 20.7% | 11.7% | 7.4% | 6% | 9.6% | 7.1% | 3.2% | 0.49% |
| May 2026 | 36.3% | 22.7% | 11.9% | 7.2% | 5.5% | 5.6% | 7.6% | 3.1% | 0.27% |
| Jun 2026 | 37.4% | 22.8% | 11.9% | 7.4% | 6.1% | 5.3% | 6.4% | 2.4% | 0.34% |
| Jul 2026 | 40% | 23.6% | 10.7% | 6.6% | 4.8% | 6.1% | 5.3% | 2.4% | 0.44% |
| Aug 2026 | 39.5% | 23.8% | 12.2% | 7.5% | 5.4% | 4.8% | 4.2% | 2.2% | 0.37% |
| Sep 2026 | 51.5% | 21.6% | 8.4% | 5.5% | 4.5% | 3.4% | 2.7% | 2.2% | 0.27% |
How has the NexGard and Seresto comparison changed over the last 12 months?
3 findings
- NexGard was ahead of Seresto in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, NexGard’s share of searches among flea, tick and worm treatment brands in New Zealand moved from 27.6% to 21.6%, and its estimated monthly branded searches held steady at 3.2K.
- Across the 12 months ending September 2026, Seresto’s share of searches among flea, tick and worm treatment brands in New Zealand moved from 3.1% to 2.2%, and its estimated monthly branded searches moved from 360 to 320.
How did search popularity change for New Zealand flea, tick and worm treatment brands in September 2026?
2 changes
In September 2026, NexGard lost share of searches among flea, tick and worm treatment brands in New Zealand, from 23.8% to 21.6%.
Estimated monthly branded searches for Seresto in New Zealand fell 11.1% over 12 measured months, from 360 to 320 in September 2026.
How are branded searches counted?
10 search terms
Brandwave collects information about searches that people make online using NexGard’s and Seresto’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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