DayQuil vs Robitussin:Which is more popular?
In September 2026, Robitussin had more branded searches than DayQuil among cold and flu brands in the United States. Robitussin had about 201,000 branded searches, while DayQuil had 165,000. Robitussin made up 12.9% of all cold and flu brand searches we track, and DayQuil accounted for 10.6%. When we asked ChatGPT and Google AI Overviews about cold and flu brands, Robitussin appeared in two of the five answers and DayQuil in one.
Who do people search for more?
Robitussin, about 22% more searches than DayQuil
Who does AI mention more?
Robitussin, mentioned in 2 of 5 answers, DayQuil in 1
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Top cold and flu brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Robitussin was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. DayQuil was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Mucinex4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers- Robitussin2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Delsym2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
NyQuil1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers- DayQuil1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Vicks1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Theraflu0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Zicam0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Alka-Seltzer Plus0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about cold and flu brands
5 answers
Asked ChatGPT
“What's the best cold medicine?”
Asked ChatGPT
“What's good for a stuffy nose?”
Asked ChatGPT
“What's the best cough medicine for adults?”
Searched Google, AI Overview
“cold medicine”
Searched Google, AI Overview
“best cold medicine”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in United States on October 27, 2026.
Is DayQuil or Robitussin more popular in search?
This chart shows how often people search Google for DayQuil and Robitussin by name. Each line represents a brand's share of searches for all nine cold and flu brands we track, month by month, from searches in United States.
Share of searches by month for Robitussin, DayQuil. The figures are in the table below the chart.
View monthly share of searches table
| Month | Mucinex | NyQuil | Robitussin | Theraflu | DayQuil | Vicks | Zicam | Delsym | Alka-Seltzer Plus |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 30.1% | 13.5% | 13.5% | 11% | 9% | 9% | 7.4% | 5% | 1.5% |
| Nov 2025 | 30.6% | 13.7% | 11.2% | 13.7% | 9.2% | 7.5% | 7.5% | 5% | 1.5% |
| Dec 2025 | 28.7% | 12.8% | 10.5% | 19.2% | 8.6% | 7% | 7% | 4.7% | 1.4% |
| Jan 2026 | 28% | 12.5% | 10.2% | 18.7% | 8.4% | 8.4% | 6.9% | 5.6% | 1.4% |
| Feb 2026 | 28% | 12.5% | 10.3% | 15.3% | 10.3% | 8.4% | 8.4% | 5.6% | 1.4% |
| Mar 2026 | 33.3% | 12.2% | 12.2% | 12.2% | 8.1% | 8.1% | 6.7% | 5.5% | 1.6% |
| Apr 2026 | 34.6% | 12.7% | 12.7% | 10.3% | 8.5% | 8.5% | 5.7% | 5.7% | 1.4% |
| May 2026 | 30.2% | 13.5% | 13.5% | 11% | 9.1% | 9.1% | 6.1% | 6.1% | 1.5% |
| Jun 2026 | 33.9% | 12.5% | 12.5% | 10.2% | 8.3% | 10.2% | 5.6% | 5.6% | 1.4% |
| Jul 2026 | 30.1% | 13.5% | 13.5% | 9.1% | 9.1% | 11.1% | 6.1% | 6.1% | 1.5% |
| Aug 2026 | 31.3% | 14% | 11.4% | 11.4% | 9.4% | 9.4% | 6.3% | 5.1% | 1.5% |
| Sep 2026 | 28.9% | 12.9% | 12.9% | 12.9% | 10.6% | 8.7% | 7.1% | 4.7% | 1.4% |
How has the DayQuil and Robitussin comparison changed over the last 12 months?
3 findings
- Robitussin was ahead of DayQuil in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, DayQuil’s share of searches among cold and flu brands in the United States moved from 9% to 10.6%, and its estimated monthly branded searches moved from 110K to 165K.
- Across the 12 months ending September 2026, Robitussin’s share of searches among cold and flu brands in the United States moved from 13.5% to 12.9%, and its estimated monthly branded searches moved from 165K to 201K.
How did search popularity change for United States cold and flu brands in September 2026?
2 changes
In September 2026, Robitussin gained share of searches among cold and flu brands in the United States, from 11.4% to 12.9%.
In September 2026, DayQuil gained share of searches among cold and flu brands in the United States, from 9.4% to 10.6%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using DayQuil’s and Robitussin’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.
DayQuil
1 branded search term
- dayquil
Robitussin
1 branded search term
- robitussin
Other head-to-heads among cold and flu brands
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