Magnesium
Where AI assistants place [Your Brand] when a shopper asks what Magnesium to buy - and the moves that would raise its rank.
ChatGPT · Perplexity · Gemini · collected September 1, 2026
Share of voice = the share of answers in which the brand is named. Assistants name several brands per answer, so these figures overlap and do not sum to 100%.
[Your Brand] holds 6% share of the AI shelf for Magnesium, ranked #13 of 168 brands.
Thorne leads at 43% SoV, 37 points ahead of [Your Brand].
[Your Brand] is named first in only 0% of answers, and the attribute competitors most often win on is Third-party tested.
The same question produces a different shelf on each assistant. This is where you find out you are losing on one platform and absent from another - which is not the same problem and does not have the same fix.
| Brand | ChatGPT | Perplexity | Gemini |
|---|---|---|---|
| Thorne | 53% | 25% | 52% |
| Pure Encapsulations | 37% | 15% | 40% |
| Nature Made | 38% | 17% | 14% |
| NOW Foods | 18% | 12% | 19% |
| Transparent Labs | 19% |
[Your Brand] is never named in 15 of 20 buyer questions, including "best magnesium for athletes and recovery".
These are the most specific questions a buyer asks - they state an exact requirement. Assistants answer them from pages that address that requirement directly, and [Your Brand] does not have one.
Asked: “best vegan magnesium capsules”
Ranked #1 in VegFAQs’s list of the top vegan magnesium supplements of 2026.
Asked: “best vegan magnesium capsules”
Pure Encapsulations is widely praised by dietitians and healthcare practitioners.
Asked: “best vegan magnesium capsules”
strongest recurring picks are PlantFusion Vegan Magnesium Glycinate
Verbatim excerpts from collected answers. These are the assistants' own words, reproduced unedited - including any claims about other brands, which we neither verify nor endorse.
Domains the assistants link to when answering these questions. Getting cited here is what moves the numbers above.
| Domain | Share of citations |
|---|---|
| healthline.com | 7% |
| amazon.com | 4% |
| pmc.ncbi.nlm.nih.gov | 4% |
| mcpress.mayoclinic.org | 2% |
| mitohealth.com | 2% |
| nebraskamed.com | 2% |
| consumerlab.com | 2% |
| reddit.com | 2% |
| scienceinsights.org | 2% |
| everydayhealth.com | 1% |
Assistants read your pages in 20 answers - and named [Your Brand] in none of them. The page was opened, quoted, and somebody else was named anyway: what could not be lifted out of the text is who did the work.
Pages on your-brand.example that assistants opened and quoted while answering these questions. In the table above your domain is one row with a citation share; the question here is a different one: did the answer that read your page end up naming [Your Brand].
| Page | Read in | Named in |
|---|---|---|
| The Best Type of Magnesium: Which One Should You Take? https://your-brand.example/wellness/supplements/types-of-magnesium | 10 | 0 |
| Magnesium Glycinate vs. Citrate: Which Type Is Best for You? https://your-brand.example/wellness/supplements/magnesium-glycinate-vs-citrate | 5 | 0 |
| Magnesium for Heart Health: How It Supports Your Heart & ... |
| Question | Named in |
|---|---|
| practitioner grade magnesium brands | 6 / 15 |
| best magnesium brands 2026 | 6 / 15 |
| best magnesium supplement | 5 / 15 |
| third party tested magnesium supplement | 1 / 15 |
| best magnesium and calcium supplement | 1 / 15 |
| Question | Named in |
|---|---|
| best magnesium for athletes and recovery | 0 / 15 |
| best magnesium for constipation | 0 / 15 |
| best magnesium for heart health |
20 buyer questions x 3 assistants x 5 runs = 300 answers, collected September 1, 2026.
AI answers are not deterministic: the same question asked twice can name different brands. We ask every question multiple times on every assistant, so these numbers describe a pattern rather than a single lucky or unlucky answer.
All answers are collected through official APIs with web grounding enabled - no scraping of chat interfaces. Every run is stored immutably, so this report can be reproduced exactly as it was generated.
This is your baseline. We re-run this monthly - the next report shows what moved, what did not, and whether the moves above landed.
| 0% |
| 11% |
| Doctor's Best | 10% | 7% | 11% |
| Nutricost | 18% | 5% | 3/100 |
| Ritual | 15% | 3/100 | 6% |
| [Your Brand] | 3/100 | 10% | 6% |
0% means the assistant answered these questions and never named the brand. A figure like 2/60 means too few mentions to state a rate: it shows how many answers named the brand, out of how many.
[Your Brand] is strongest on Perplexity (10%) and weakest on Gemini (6%).
These questions carry 75% of the answers in this measurement. Entering them is the cheapest gain available in this report.
Assistants opened 3 pages on your-brand.example across 20 answers and named [Your Brand] in none of them.
The page was read and quoted, so it is reachable, indexed and relevant to the question - it cleared every bar but the last one. What the assistant could not lift out of the text is the claim "this is [Your Brand], and this is what it does". That is what happens when a page speaks as "we" and the name appears only in the header, the logo and the tab title.
These pages already clear the bar - they are read in 20 answers of the measurement. Nothing here has to be negotiated with anyone: it is the only work in this report that is entirely on your side.
In answers where [Your Brand] ranks below a competitor, the higher-ranked entrant is credited with these properties:
These are the specific properties assistants cite when they justify a pick. They are visible, checkable, and mostly fixable.
The most direct lever in this report - it is the difference between being listed and being recommended.
[Your Brand] appears in 6% of answers but is named first in only 0%. When it is named, it sits on average at place 4.9 in the assistant's list of brands. These are the questions where it comes closest, with the brand that takes first place in those same answers.
Being named is a coverage problem; being named first is a positioning problem. Assistants lead with whichever brand most cleanly matches the intent in the question - "best overall", "best value", "best for women". [Your Brand] currently reads as a safe second choice rather than as the answer to a specific one.
[Your Brand] is effectively never the first name in the answer today, so the entire first-mention share is still open. The first three places are where an assistant's recommendation actually lands - the rest of the list is read as also-rans.
Assistants opened 3497 links to answer the Magnesium questions in this measurement, and they took them from a narrow set of domains: healthline.com alone accounts for 7% of them. [Your Brand] is named in answers that read 4 of the 5 domains below, and never in the answers that read the other 1.
Grounded assistants cite before they recommend. A brand that is not on those pages is usually not in the answer. The last number on each line is how often reading that domain ended in an answer that named you - a domain read this often with a low number beside it is a page the assistants already trust and you are missing from.
The slowest of these moves and the most durable. A placement lands in front of every answer that already opens that domain - healthline.com alone is read in 175 answers of this measurement. Citation placement compounds: it feeds every future answer.
| 5 |
| 0 |
| 0 / 15 |
| best magnesium for muscle cramps | 0 / 15 |
| best magnesium for restless legs | 0 / 15 |
| Question | Named in | Answers |
|---|---|---|
| best magnesium brands 2026 | 6 | 15 |
| practitioner grade magnesium brands | 6 | 15 |
| best magnesium supplement | 5 | 15 |
| best magnesium and calcium supplement | 1 | 15 |
| third party tested magnesium supplement | 1 | 15 |
| best magnesium for athletes and recovery | 0 | 15 |
| best magnesium for constipation | 0 | 15 |
| best magnesium for heart health | 0 | 15 |
| best magnesium for muscle cramps | 0 | 15 |
| best magnesium for restless legs | 0 | 15 |
| best magnesium for sensitive stomach | 0 | 15 |
| best magnesium for sleep | 0 | 15 |
| best magnesium for women over 40 | 0 | 15 |
| best magnesium powder | 0 | 15 |
| best vegan magnesium capsules | 0 | 15 |
| hypoallergenic magnesium supplement | 0 | 15 |
| magnesium for anxiety which one | 0 | 15 |
| magnesium for migraines which form | 0 | 15 |
| magnesium glycinate vs citrate | 0 | 15 |
| magnesium supplement without magnesium stearate | 0 | 15 |