Head to head · Vitamins & Minerals
Doctor's Best High Absorption Magnesium (Lysinate Glycinate) vs Thorne Zinc Picolinate 15 mg
Thorne scores higher overall (8.5 vs 7.9 out of 10), mainly on quality & purity, experience and transparency. Doctor's Best still leads on value.
Updated September 2026 from our full reviews · How we score
A long-running Amazon favorite: 200 mg of fully chelated magnesium per serving that is easy on the gut, but the tablets are large and the full label dose exceeds the UL.
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A small, NSF-certified 15 mg zinc picolinate capsule dosed near the RDA; TikTok-famous for skin anecdotes, and best paired with copper for long-term use.
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We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose Doctor's Best if…
- People who get stomach upset from magnesium oxide or citrate
- Evening routines aimed at relaxation and muscle tension
- Buyers who want a chelated form at a mid-range price
- You care most about value
Choose Thorne if…
- People with low zinc intake, including those eating mostly plant foods
- Athletes and label-conscious buyers who want NSF-certified products
- Anyone who wants single-nutrient zinc at a modest dose
- You care most about quality & purity, experience, transparency
Side by side
| High Absorption Magnesium (Lysinate Glycinate) | Zinc Picolinate 15 mg | |
|---|---|---|
| Our score | 7.9 / 10 | 8.5 / 10 |
| Efficacy (30%) | 7.8 | 8.0 |
| Quality & Purity (25%) | 7.2 | 9.2 |
| Value (20%) | 8.8 | 7.8 |
| Experience (15%) | 7.6 | 8.8 |
| Transparency (10%) | 8.5 | 9.0 |
| Form | Tablet | Capsule |
| Serving | 2 tablets120 servings per container | 1 capsule60 servings per container |
| Testing & certifications | None verified | NSF Contents Certified |
| Dietary | Vegan, Gluten-free, Soy-free, Non-GMO | Gluten-free, Dairy-free, Soy-free |
| Key ingredients |
|
|
| Flavors | — | — |
| Creator video reviews | 5 | 5 |
Pros and cons
High Absorption Magnesium (Lysinate Glycinate)
- Fully chelated magnesium lysinate glycinate made with Albion TRAACS
- Clear elemental dose: 200 mg per two tablets
- Vegan, gluten-free, soy-free and non-GMO
- About $0.20 per 200 mg serving
- The label's full dose (400 mg) exceeds the 350 mg upper limit for supplemental magnesium
- Large tablets that some people need to split
- No USP or NSF certification
- Grogginess or loose stools reported by some at the full dose
Zinc Picolinate 15 mg
- 15 mg dose close to the RDA and well under the 40 mg upper limit
- Minimal excipients; gluten-, dairy- and soy-free
- Listed in NSF's certification database; Amazon listing says NSF Contents Certified
- Small 18 mm capsules
- No copper included for long-term use
- Picolinate's absorption advantage is a brand claim NIH does not confirm
- About $0.25 per day, pricier than drugstore zinc
- Two capsules a day plus diet can approach the upper limit
Our verdicts
High Absorption Magnesium (Lysinate Glycinate)
A well-tolerated, clearly labeled chelated magnesium at a fair price, and a sensible first choice for people who found magnesium oxide or citrate hard on the stomach. Start with one 200 mg serving rather than the label's full 400 mg, and expect large tablets.
Full review
Zinc Picolinate 15 mg
A clean, well-dosed zinc supplement from a manufacturer with a strong testing record. The 15 mg dose covers daily needs without crowding the upper limit; add copper if you take it for months, and do not expect the dramatic skin results shared on TikTok to be typical.
Full review
What creators say
Questions people ask
Is Doctor's Best better than Thorne?
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Who should choose Doctor's Best over Thorne?
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