Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) vs NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)
Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) (#1, best overall) vs NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) (#3): in our Magnesium Glycinate for Sleep scoring the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) totals 8.9/10 and the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227…
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NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)
$14.69Check price at iHerbRead full reviewTopsFive comparison scores
Side by side
| Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) | NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) | |
|---|---|---|
| Price | $52 | $14.69 |
| Magnesium Form | Magnesium bisglycinate | Albion magnesium bisglycinate |
| Elemental Magnesium | 200 mg per serving | 300 mg per serving |
| Serving Size | 1 scoop (3.11 g) | 1 level teaspoon (approximately 3 g) |
| Servings Per Container | 60 | About 76 |
| Added Sleep Ingredients | None; no melatonin or L-theanine | None; no melatonin or L-theanine |
| Third-Party Verification | NSF Certified for Sport | No qualifying finished-product certification shown; Non-GMO Project Verified |
| Other Ingredients | Citric acid; monk fruit concentrate | Citric acid |
| Allergen/Diet Notes | Gluten-free | Vegetarian/vegan and kosher; not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish, tree nuts or sesame |
How they differ in real use
Built from our magnesium glycinate for sleep scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) and the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) made our Top 5 Magnesium Glycinate for Sleep, at #1 (best overall) and #3. Its NSF Certified for Sport listing gives it a decisive advantage on the highest-weighted criterion, while the pure bisglycinate form and transparent 200 mg elemental dose remain strong. The premium price prevents a higher Value score but does not outweigh its certification advantage. The form, research-aligned dose, minimal ingredient list and exceptional value are stronger than the remaining uncertified products. Its low Third-Party Testing score keeps it below the independently verified top two despite leading the lighter-weight criteria.
We score magnesium glycinate for sleep on Third-Party Testing (30%), Form & Bioavailability (25%), Dose vs Research (20%), Label Transparency (15%) and Value (10%). On that basis the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) totals 8.9 out of 10 and the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) 7.9. The widest gap is Third-Party Testing, where the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) scores 10 against 3 for the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) — independent certification or a published certificate of analysis. Value also separates them: 10 for the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) versus 4 for the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g). The NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) claws back ground on Dose vs Research and Label Transparency.
On paper, the specifications that actually differ: Magnesium Form — Magnesium bisglycinate on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus Albion magnesium bisglycinate on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g); Elemental Magnesium — 200 mg per serving on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus 300 mg per serving on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g); Serving Size — 1 scoop (3.11 g) on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus 1 level teaspoon (approximately 3 g) on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g); Servings Per Container — 60 on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus About 76 on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g); Third-Party Verification — NSF Certified for Sport on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus No qualifying finished-product certification shown; Non-GMO Project Verified on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g); Other Ingredients — Citric acid; monk fruit concentrate on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus Citric acid on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g). They match on Added Sleep Ingredients.
Pricing as of August 5, 2026: $52 for the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) and $14.69 for the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g), a $37.31 difference in the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)'s favor. Owners praise the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) for the exact 187 g powder appears in the NSF Certified for Sport database. and the panel clearly states 200 mg of elemental magnesium as magnesium bisglycinate.; the most common complaint is at $0.87 per 200 mg serving, it has the highest cost per active ingredient in the list. Owners praise the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) for the 300 mg elemental dose is close to the 250 mg magnesium-bisglycinate dose used in the cited sleep trial. and at about $0.06 per 100 mg of elemental magnesium, it has the list's lowest active-ingredient cost.; the most common complaint is no USP, NSF, Informed Sport or published product-specific certificate is shown for the finished product.
Thorne, Magnesium Bisglycinate, 6.5 oz (187 g)
- The exact 187 g powder appears in the NSF Certified for Sport database.
- The panel clearly states 200 mg of elemental magnesium as magnesium bisglycinate.
- One scoop provides the complete serving without a multi-capsule or multi-tablet dose.
- At $0.87 per 200 mg serving, it has the highest cost per active ingredient in the list.
- Citric acid and monk fruit concentrate make it unsuitable for buyers wanting an unsweetened, single-ingredient powder.
NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)
- The 300 mg elemental dose is close to the 250 mg magnesium-bisglycinate dose used in the cited sleep trial.
- At about $0.06 per 100 mg of elemental magnesium, it has the list's lowest active-ingredient cost.
- The panel lists only magnesium bisglycinate and citric acid, without a proprietary blend.
- No USP, NSF, Informed Sport or published product-specific certificate is shown for the finished product.
- The label requires one teaspoon to be diluted in at least 6 oz of water or juice, making it less convenient than tablets or capsules.
Which should you buy?
The Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) is the better fit for buyers prioritizing the strongest independent certification and people who prefer one mixed scoop instead of tablets or capsules — it is the higher-scoring pick here, chiefly for Third-Party Testing. The NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) is the better fit for buyers prioritizing elemental-magnesium value and people comfortable mixing an unsweetened powder, and the stronger choice if Value and Dose vs Research matter more to you than the overall score. If the $37.31 saving matters more than Third-Party Testing, the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) is the better value. The Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) is a poor fit for budget-focused buyers; the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) is a poor fit for people wanting capsules or tablets.
Choose the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) if
- Buyers prioritizing the strongest independent certification
- People who prefer one mixed scoop instead of tablets or capsules
Skip it if
- Budget-focused buyers
- People avoiding monk fruit or citric acid
Choose the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) if
- Buyers prioritizing elemental-magnesium value
- People comfortable mixing an unsweetened powder
Skip it if
- People wanting capsules or tablets
- Buyers requiring external finished-product certification
Common questions
Is the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) better than the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)?
In our Magnesium Glycinate for Sleep ranking the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) scores higher overall, 8.9 to 7.9, with the biggest advantage in Third-Party Testing. The NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g) is stronger on Value and Dose vs Research, so it is the better pick if those matter most to you.
How much more does the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) cost than the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)?
$37.31 more as of August 5, 2026: $52 for the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) against $14.69 for the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g). Prices move, so the merchant page shows the current figure. What the extra buys is mostly Third-Party Testing — 10 versus 3 in our scoring.
What is the main difference between the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) and the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g)?
The headline spec difference is Magnesium Form: Magnesium bisglycinate on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus Albion magnesium bisglycinate on the NOW Foods, Magnesium Bisglycinate Powder, 8 oz (227 g). In use, the gap that matters most is Third-Party Testing (10 vs 3 in our scoring): independent certification or a published certificate of analysis.