What are the best magnesium glycinate supplements for sleep?
A shopper question from TopMention’s Supplements Shopify prompt panel — used for AEO/GEO share-of-voice measurement across ChatGPT, Claude, Perplexity and Gemini.
Live AI recommendations
Brand visibility ranking
| # | Brand | Mention rate | Avg pos | Mentions |
|---|---|---|---|---|
| 1 |
Thorne Magnesium Bisglycinate
|
55% | 1.0 | 18 |
| 2 |
Doctor's Best High Absorption Magnesium
|
52% | 2.9 | 17 |
| 3 |
Ritual Magnesium+ Bisglycinate
|
48% | 2.7 | 16 |
| 4 |
Pure Encapsulations
|
42% | 1.9 | 14 |
| 5 |
Doctor's Best
|
39% | 1.3 | 13 |
| 6 |
Micro Ingredients Magnesium Glycinate
|
36% | 4.5 | 12 |
| 7 |
Nature Made
|
33% | 3.1 | 11 |
| 8 |
Nature Made Magnesium Glycinate
|
30% | 4.7 | 10 |
AI model comparison
Top mention rate
- Nutricost100%
- NatureBell100%
- Micro Ingredients100%
Top mention rate
- Pure Encapsulations81%
- Doctor's Best81%
- Nature Made69%
Top mention rate
- Ritual Magnesium+ Bisglycinate100%
- Thorne Magnesium Bisglycinate100%
- Doctor's Best High Absorption Magnesium94%
Most-cited domains
Why this prompt matters for Supplements brands
“Best of” questions are how many shoppers start research in supplements. When ChatGPT, Claude, Perplexity, or Gemini names three brands and yours is absent, you lose the consideration set before a PDP visit.
In supplements, these prompts often cluster around third-party testing, dosage form, allergens. Models prefer brands that publish clear proof on those dimensions — not only lifestyle photography.
TopMention keeps this exact question in a fixed supplements panel so you can see whether work on schema, crawlers, and citable copy moves mention rate over time.
Supplement shoppers ask AI for third-party testing, forms that absorb, and brands that won't upset their stomach.
What AI systems typically look for when answering
- Clear product-market fit language for collagen and related lines
- Evidence signals shoppers ask about (third-party testing, dosage form, allergens)
- Consistent brand entity across site, schema, and third-party mentions
- Comparisons or shortlists that are easy to extract from HTML
On-site content that helps you get named
- Lead with testing and form (glycinate, etc.)
- Collection intros that answer “who is this for?” in the first screen
- Spec or proof tables for third-party testing and dosage form
- FAQs that reuse shopper wording (not internal jargon)
- Hero PDPs with scannable “best for” lines
Deeper category patterns: citable content for Supplements.
Technical signals that support mentions
- AI crawlers allowed on storefront HTML
- Product + Organization JSON-LD with consistent brand spelling
- llms.txt pointing at flagship collections
- Shopping readiness (offers, availability, GTIN where relevant)
See also AI crawler access for Supplements and Product schema priorities.
How TopMention scores this prompt type
TopMention counts a mention when the model names your brand (or a configured alias) in the answer to this exact prompt.
Rank order is useful context for prioritization, but share of voice is primarily mention rate across the panel.
We report per-model SoV so you can see if you win one assistant and lose another.
Common mistakes
- Publishing thin “best of” blog posts with no facts models can quote
- Hiding specs behind quizzes or JS-only widgets
- Inconsistent brand naming that splits entity confidence
- Changing the prompt panel every week so SoV becomes noise
Where to go next
- Category guide for this intent (Supplements)
- What is share of voice?
- What is a prompt panel?
- What is citability?
- How AI share of voice works
- AEO / GEO checklist for DTC
- What is AEO?
Related best-of questions
- What's the best organic collagen powder that dissolves well?
- Best creatine gummies for women
- Best third-party tested whey protein powder
FAQ
Why track “best supplements” prompts?
They are high-intent discovery queries. Winning them compounds across models that reuse similar recommendation patterns.
Does appearing later in a list still count?
Yes for share of voice. Position helps Fix Sprint prioritization, but SoV is mention-based.
Will one blog post make ChatGPT recommend us?
Rarely alone. Mentions usually need crawl access, entity clarity, citable facts, and often third-party citations.
How often should we re-measure?
Weekly on the same panel is enough for most Shopify brands. Re-scan after major schema, robots, or content releases.
What supplements proof should we publish first?
Start with third-party testing, dosage form, allergens on hero PDPs and the top collection — those are the filters shoppers and models use most.