NexGard vs Seresto:Which is more popular?
In September 2026, NexGard had more branded searches than Seresto among flea and worm treatment brands in Australia. NexGard had about 43,000 branded searches, while Seresto had 390. NexGard made up 74.2% of all flea and worm treatment brand searches we track, and Seresto accounted for 0.67%. When we asked ChatGPT and Google AI Overviews about flea and worm treatment brands, NexGard appeared in four of the five answers and Seresto in one. NexGard was mentioned before Seresto in every answer.
Who do people search for more?
NexGard, about 110 searches for every 1 for Seresto
Who does AI mention more?
NexGard, mentioned in 4 of 5 answers, Seresto in 1
Who does AI recommend more?
NexGard, named ahead of Seresto in every answer
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Top flea and worm treatment brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, NexGard was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. 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.
- NexGard4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Bravecto2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Simparica2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Capstar2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Drontal1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Seresto1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Frontline0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about flea and worm treatment brands
5 answers
Asked ChatGPT
“Which flea and tick treatment should I use for my dog in Australia?”
Asked ChatGPT
“What are the best flea treatments for cats?”
Asked ChatGPT
“What's the best worming tablet for dogs?”
Searched Google, AI Overview
“flea treatment for dogs”
Searched Google, AI Overview
“flea treatment”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in Australia on October 26, 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 seven flea and worm treatment brands we track, month by month, from searches in Australia.
Share of searches by month for NexGard, Seresto. The figures are in the table below the chart.
View monthly share of searches table
| Month | NexGard | Bravecto | Frontline | Drontal | Simparica | Capstar | Seresto |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 73.1% | 11.7% | 6.4% | 2.8% | 4.3% | 1% | 0.69% |
| Nov 2025 | 73.4% | 11.8% | 6.4% | 3.4% | 3.4% | 1.1% | 0.57% |
| Dec 2025 | 73% | 11.7% | 6.3% | 3.5% | 3.5% | 1.3% | 0.84% |
| Jan 2026 | 73.2% | 11.2% | 6% | 3.3% | 3.9% | 1.5% | 0.81% |
| Feb 2026 | 74.6% | 9.7% | 6.4% | 3.5% | 3.5% | 1.6% | 0.58% |
| Mar 2026 | 72% | 11% | 7.4% | 3.3% | 3.9% | 1.8% | 0.65% |
| Apr 2026 | 71.9% | 11.5% | 7.7% | 3.4% | 3.4% | 1.5% | 0.55% |
| May 2026 | 74.2% | 9.7% | 7.9% | 3.5% | 2.9% | 1.3% | 0.46% |
| Jun 2026 | 70.6% | 10.8% | 8.8% | 3.9% | 3.9% | 1.4% | 0.51% |
| Jul 2026 | 75.6% | 9.9% | 6.5% | 3.6% | 2.9% | 1.1% | 0.47% |
| Aug 2026 | 74.8% | 9.3% | 7.6% | 3.4% | 3.4% | 1% | 0.45% |
| Sep 2026 | 74.2% | 11.4% | 6.2% | 3.3% | 3.3% | 1% | 0.67% |
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 and worm treatment brands in Australia moved from 73.1% to 74.2%, and its estimated monthly branded searches moved from 41.2K to 43K.
- Across the 12 months ending September 2026, Seresto’s share of searches among flea and worm treatment brands in Australia moved from 0.69% to 0.67%, and its estimated monthly branded searches held steady at 390.
How did search popularity change for Australia flea and worm treatment brands in September 2026?
1 change
In September 2026, NexGard lost share of searches among flea and worm treatment brands in Australia, from 74.8% to 74.2%.
How are branded searches counted?
3 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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