FullWell vs One A Day:Which is more popular?
In September 2026, One A Day had more branded searches than FullWell among prenatal vitamin brands worldwide. One A Day had about 18,100 branded searches, while FullWell had 8,100. One A Day made up 3.8% of all prenatal vitamin brand searches we track, and FullWell accounted for 1.7%. When we asked ChatGPT and Google AI Overviews about prenatal vitamin brands, One A Day appeared in one of the five answers and FullWell in none.
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Top prenatal vitamin brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, One A Day was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews. FullWell did not appear in any of the five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Nature Made1st
Thorne2nd
Needed3rd
Perelel4th
Ritual5th
One A Day6th
New Chapter7th- Elevit–
Pregnacare–- +1 more
FullWell–- +1 more
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Nature Made5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Perelel2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Ritual2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Needed2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Thorne2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- One A Day1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- New Chapter1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Elevit0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Pregnacare0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- FullWell0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about prenatal vitamin brands
5 answers
Asked ChatGPT
“Which prenatal vitamin brand should I take?”
Asked ChatGPT
“What are the best prenatal vitamin brands?”
Asked ChatGPT
“What's the best prenatal vitamin brand for morning sickness?”
Searched Google, AI Overview
“prenatal vitamins”
Searched Google, AI Overview
“best prenatal vitamins”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 22, 2026.
Is FullWell or One A Day more popular in search?
This chart shows how often people search Google for FullWell and One A Day by name. Each line represents a brand's share of searches for all 12 prenatal vitamin brands we track, month by month, from English-language searches worldwide.
Share of searches by month for One A Day, FullWell. The figures are in the table below the chart.
View monthly share of searches table
| Month | Elevit | Pregnacare | Nature Made | Perelel | Ritual | Needed | Thorne | One A Day | Centrum | FullWell | Garden of Life | New Chapter |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 31% | 25.2% | 9.3% | 6.2% | 7.6% | 5.1% | 5.1% | 3.4% | 1.9% | 1.9% | 2.8% | 0.66% |
| Nov 2025 | 28% | 23% | 10.3% | 8.4% | 8.4% | 5.6% | 5.6% | 3.8% | 1.7% | 2.1% | 2.5% | 0.61% |
| Dec 2025 | 26.8% | 22.1% | 14.8% | 8.1% | 8.1% | 4.4% | 5.4% | 3.6% | 1.6% | 1.6% | 3% | 0.59% |
| Jan 2026 | 27% | 22% | 14.8% | 6.6% | 8.1% | 5.4% | 5.4% | 3.6% | 2% | 1.6% | 3% | 0.58% |
| Feb 2026 | 31% | 20.8% | 11.4% | 7.6% | 9.3% | 5.1% | 5.1% | 3.4% | 1.9% | 1.5% | 2.3% | 0.67% |
| Mar 2026 | 28.5% | 23.2% | 12.8% | 7% | 8.5% | 5.7% | 4.7% | 3.1% | 1.7% | 1.7% | 2.6% | 0.61% |
| Apr 2026 | 25.9% | 21.1% | 21.1% | 6.3% | 7.8% | 5.2% | 4.3% | 2.8% | 1.6% | 1.6% | 1.9% | 0.56% |
| May 2026 | 27.9% | 22.7% | 15.3% | 6.8% | 8.4% | 5.6% | 4.6% | 3.1% | 1.7% | 1.7% | 1.7% | 0.6% |
| Jun 2026 | 26.7% | 21.8% | 17.9% | 6.5% | 8% | 5.4% | 5.4% | 2.9% | 1.3% | 2% | 1.6% | 0.57% |
| Jul 2026 | 26% | 21.2% | 17.4% | 7.8% | 7.8% | 5.2% | 5.2% | 3.5% | 1.6% | 1.9% | 1.9% | 0.56% |
| Aug 2026 | 28.5% | 23.2% | 10.4% | 8.5% | 8.5% | 5.7% | 4.7% | 3.8% | 1.7% | 2.1% | 2.1% | 0.61% |
| Sep 2026 | 28.2% | 23% | 10.4% | 8.5% | 8.5% | 6.9% | 4.6% | 3.8% | 2.1% | 1.7% | 1.7% | 0.61% |
How has the FullWell and One A Day comparison changed over the last 12 months?
3 findings
- One A Day was ahead of FullWell in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, FullWell’s share of searches among prenatal vitamin brands worldwide moved from 1.9% to 1.7%, and its estimated monthly branded searches held steady at 8.1K.
- Across the 12 months ending September 2026, One A Day’s share of searches among prenatal vitamin brands worldwide moved from 3.4% to 3.8%, and its estimated monthly branded searches moved from 14.8K to 18.1K.
How did search popularity change for prenatal vitamin brands worldwide in September 2026?
2 changes
In September 2026, FullWell fell from 9th to 10th among prenatal vitamin brands worldwide.
Estimated monthly branded searches for One A Day worldwide rose 22.3% over 12 measured months, from 14.8K to 18.1K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using FullWell’s and One A Day’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.
Other head-to-heads among prenatal vitamin brands
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