Magnesium
Where AI assistants place [Your Brand] when a shopper asks what Magnesium to buy - and the moves that would raise its rank.
Claude · Perplexity · Grok · 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 9% share of the AI shelf for Magnesium, ranked #6 of 129 brands.
Thorne leads at 39% SoV, 30 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 | Perplexity | Claude | Grok |
|---|---|---|---|
| Thorne | 25% | 25% | 66% |
| Pure Encapsulations | 15% | 24% | 60% |
| NOW Foods | 12% | 14% | 29% |
| Doctor's Best | 7% | 7% | 32% |
| Nature Made | 17% |
[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”
Top Overall Pick: Doctor’s Best High Absorption Magnesium Glycinate Lysinate
Asked: “best vegan magnesium capsules”
NATURELO offers 300mg magnesium glycinate per 3-capsule serving, with an organic botanical complex including spirulina, spinach, pumpkin seed, and chlorella.
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 |
|---|---|
| amazon.com | 5% |
| healthline.com | 4% |
| verywellhealth.com | 2% |
| pmc.ncbi.nlm.nih.gov | 2% |
| consumerlab.com | 2% |
| mitohealth.com | 2% |
| ubiehealth.com | 2% |
| cymbiotika.com | 2% |
| health.com | 1% |
| boltpharmacy.co.uk | 1% |
Assistants read your pages in 30 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 |
|---|---|---|
| Magnesium Glycinate vs. Citrate: Which Type Is Best for You? - [Your Brand] https://your-brand.example/wellness/supplements/magnesium-glycinate-vs-citrate | 10 | 0 |
| The Best Type of Magnesium: Which One Should You Take? https://your-brand.example/wellness/supplements/types-of-magnesium | 10 | 0 |
| Magnesium for Heart Health: How It Supports Your Heart & Which Type Works Best - [Your Brand] |
| Question | Named in |
|---|---|
| best magnesium brands 2026 | 10 / 15 |
| third party tested magnesium supplement | 5 / 15 |
| practitioner grade magnesium brands | 5 / 15 |
| best magnesium supplement | 5 / 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% |
| 25% |
| [Your Brand] | 10% | 0% | 16% |
| Nutricost | 5% | 9% | 3/100 |
| Metagenics | 4/100 | 5% | 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 Grok (16%) and is never named on Claude at all.
These questions carry 75% of the answers in this measurement. Entering them is the cheapest gain available in this report.
Assistants opened 4 pages on your-brand.example across 30 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 30 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] is named on Grok (16%) and never once on Claude - 1 of the 3 assistants measured.
Each assistant grounds its answers in a different set of sources. Being absent from one while present on another is not a ranking problem - it is a coverage problem, and it usually traces to which sites that assistant reads.
Reaching parity with Grok on even one more assistant would roughly double the share on page one, because the figure is an average across all 3.
[Your Brand] appears in 9% of answers but is named first in only 0%. When it is named, it sits on average at place 4.7 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 3388 links to answer the Magnesium questions in this measurement, and they took them from a narrow set of domains: amazon.com alone accounts for 5% of them. Every domain below already turns up in answers that name [Your Brand] - the work here is depth on those pages rather than a first placement.
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 - amazon.com alone is read in 88 answers of this measurement. Citation placement compounds: it feeds every future answer.
| 9 |
| 0 |
| Calcium Supplements: How to take them for the best absorption. - [Your Brand] https://your-brand.example/wellness/supplements/take-calcium-supplements-for-best-absorption | 1 | 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 | 10 | 15 |
| best magnesium supplement | 5 | 15 |
| practitioner grade magnesium brands | 5 | 15 |
| third party tested magnesium supplement | 5 | 15 |
| best magnesium and calcium 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 |