Doctor’s Best vs Moon Juice:Which is more popular?
In September 2026, Doctor’s Best had more branded searches than Moon Juice among magnesium supplement brands worldwide. Doctor’s Best had about 4,400 branded searches, while Moon Juice had 1,900. Doctor’s Best made up 4% of all magnesium supplement brand searches we track, and Moon Juice accounted for 1.7%. When we asked ChatGPT and Google AI Overviews about magnesium supplement brands, Doctor’s Best appeared in one of the four answers and Moon Juice in none.
Who do people search for more?
Doctor’s Best, about 2 searches for every 1 for Moon Juice
Who does AI mention more?
Doctor’s Best, mentioned in 1 of 4 answers, Moon Juice in 0
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Top magnesium supplement brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and one Google AI Overview, Doctor’s Best was mentioned in one out of four: in one of the three ChatGPT answers, but not in the Google AI Overview. Moon Juice did not appear in any of the four answers.
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.
Thorne4 of 4Named in 3 of 3 ChatGPT answersNamed in 1 of 1 Google answers
Pure Encapsulations3 of 4Named in 2 of 3 ChatGPT answersNamed in 1 of 1 Google answers
Nature Made2 of 4Named in 2 of 3 ChatGPT answersNamed in 0 of 1 Google answers
Now Foods1 of 4Named in 1 of 3 ChatGPT answersNamed in 0 of 1 Google answers- Doctor’s Best1 of 4Named in 1 of 3 ChatGPT answersNamed in 0 of 1 Google answers
Life Extension1 of 4Named in 0 of 3 ChatGPT answersNamed in 1 of 1 Google answers
Natural Calm0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
BiOptimizers0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
Nature's Bounty0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
Moon Juice0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
See every answer about magnesium supplement brands
4 answers
Asked ChatGPT
“Which magnesium supplement brand should I buy?”
Asked ChatGPT
“What are the best magnesium supplement brands?”
Asked ChatGPT
“What's the best magnesium supplement brand for sleep?”
Searched Google, AI Overview
“magnesium supplement”
Google showed no AI Overview for this search.
Searched Google, AI Overview
“best magnesium supplement”
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 Doctor’s Best or Moon Juice more popular in search?
This chart shows how often people search Google for Doctor’s Best and Moon Juice by name. Each line represents a brand's share of searches for all 12 magnesium supplement brands we track, month by month, from English-language searches worldwide.
Share of searches by month for Doctor’s Best, Moon Juice. The figures are in the table below the chart.
View monthly share of searches table
| Month | Natural Calm | Nature Made | BiOptimizers | Thorne | Now Foods | Pure Encapsulations | Nature's Bounty | Doctor’s Best | Life Extension | Moon Juice | Ancient Minerals | Jigsaw Health |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 38.5% | 13.1% | 12.7% | 7.2% | 5.9% | 3.9% | 5.9% | 4.8% | 3.2% | 2.1% | 2.1% | 0.52% |
| Nov 2025 | 36.2% | 12.2% | 13.6% | 8.1% | 6.7% | 4.4% | 5.4% | 5.4% | 2.9% | 2.4% | 1.9% | 0.59% |
| Dec 2025 | 38.5% | 12.9% | 11.8% | 7.1% | 5.8% | 4.7% | 5.8% | 5.8% | 3.1% | 2% | 2% | 0.63% |
| Jan 2026 | 37.5% | 15.1% | 11.3% | 6.8% | 5.6% | 5.5% | 5.5% | 5.5% | 3% | 2% | 1.6% | 0.49% |
| Feb 2026 | 39.3% | 16.1% | 9.8% | 7.2% | 6% | 4.8% | 4.8% | 4.8% | 3.2% | 1.7% | 1.7% | 0.43% |
| Mar 2026 | 35.6% | 17.9% | 10.9% | 8% | 5.7% | 4.4% | 5.3% | 5.3% | 2.9% | 1.9% | 1.5% | 0.48% |
| Apr 2026 | 35.2% | 18% | 10.9% | 9.8% | 5.7% | 4.4% | 4.4% | 5.4% | 2.9% | 1.3% | 1.5% | 0.48% |
| May 2026 | 32.7% | 20.1% | 10% | 9% | 6.4% | 4.9% | 4.9% | 4.9% | 3.3% | 1.7% | 1.7% | 0.44% |
| Jun 2026 | 33.2% | 20.7% | 10.3% | 9.2% | 6.3% | 5% | 5% | 4.1% | 2.7% | 1.5% | 1.5% | 0.45% |
| Jul 2026 | 32.8% | 20.2% | 10% | 9% | 6.1% | 6% | 4.9% | 4% | 3.3% | 1.7% | 1.5% | 0.44% |
| Aug 2026 | 32.5% | 20.3% | 10.1% | 9.1% | 6.1% | 6% | 4.9% | 4% | 3.3% | 1.7% | 1.5% | 0.44% |
| Sep 2026 | 33% | 20.4% | 10.1% | 9.1% | 6.1% | 6.1% | 5% | 4% | 2.7% | 1.7% | 1.5% | 0.44% |
How has the Doctor’s Best and Moon Juice comparison changed over the last 12 months?
3 findings
- Doctor’s Best was ahead of Moon Juice in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Doctor’s Best’s share of searches among magnesium supplement brands worldwide moved from 4.8% to 4%, and its estimated monthly branded searches moved from 5.4K to 4.4K.
- Across the 12 months ending September 2026, Moon Juice’s share of searches among magnesium supplement brands worldwide moved from 2.1% to 1.7%, and its estimated monthly branded searches moved from 2.4K to 1.9K.
How did search popularity change for magnesium supplement brands worldwide in September 2026?
2 changes
Estimated monthly branded searches for Moon Juice worldwide fell 20.8% over 12 measured months, from 2.4K to 1.9K in September 2026.
Estimated monthly branded searches for Doctor’s Best worldwide fell 18.5% over 12 measured months, from 5.4K to 4.4K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Doctor’s Best’s and Moon Juice’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.
Doctor’s Best
1 branded search term
- doctors best magnesium
Moon Juice
1 branded search term
- moon juice magnesium
Other head-to-heads among magnesium supplement brands
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