Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) vs NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets
Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) (#1, best overall) vs NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets (#5): 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 Glycinate, 100 mg, 180 Tablets…
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NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets
$19.59Check price at iHerbRead full reviewTopsFive comparison scores
Side by side
| Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) | NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets | |
|---|---|---|
| Price | $52 | $19.59 |
| Magnesium Form | Magnesium bisglycinate | Albion magnesium bisglycinate |
| Elemental Magnesium | 200 mg per serving | 200 mg per serving; 100 mg per tablet |
| Serving Size | 1 scoop (3.11 g) | 2 tablets |
| Servings Per Container | 60 | 90 |
| 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; manufacturer states in-house quality testing |
| Other Ingredients | Citric acid; monk fruit concentrate | Citric acid, hydroxypropyl cellulose, stearic acid, silicon dioxide and vegetarian coating with hypromellose, sunflower lecithin, triethyl citrate and sunflower oil |
| Allergen/Diet Notes | Gluten-free | Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nuts or sesame; facility processes other allergen-containing ingredients |
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 Glycinate, 100 mg, 180 Tablets made our Top 5 Magnesium Glycinate for Sleep, at #1 (best overall) and #5. 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. It matches Doctor's Best on elemental dose and has similarly strong recent sales, but costs more per active amount and uses a longer excipient list. With no stronger third-party verification to offset those disadvantages, it ranks fifth.
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 Glycinate, 100 mg, 180 Tablets 7.1. 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 Glycinate, 100 mg, 180 Tablets — independent certification or a published certificate of analysis. Value also separates them: 9 for the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets versus 4 for the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g).
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 Glycinate, 100 mg, 180 Tablets; Elemental Magnesium — 200 mg per serving on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus 200 mg per serving; 100 mg per tablet on the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets; Serving Size — 1 scoop (3.11 g) on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus 2 tablets on the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets; Servings Per Container — 60 on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus 90 on the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets; Third-Party Verification — NSF Certified for Sport on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus No qualifying finished-product certification shown; manufacturer states in-house quality testing on the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets; Other Ingredients — Citric acid; monk fruit concentrate on the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) versus Citric acid, hydroxypropyl cellulose, stearic acid, silicon dioxide and vegetarian coating with hypromellose, sunflower lecithin, triethyl citrate and sunflower oil on the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets. They match on Added Sleep Ingredients.
Pricing as of August 5, 2026: $52 for the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) and $19.59 for the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets, a $32.41 difference in the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets'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 Glycinate, 100 mg, 180 Tablets for the panel explicitly identifies 200 mg elemental magnesium from 2,000 mg Albion magnesium bisglycinate. and the bottle supplies 90 servings at approximately $0.22 per serving.; 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 Glycinate, 100 mg, 180 Tablets
- The panel explicitly identifies 200 mg elemental magnesium from 2,000 mg Albion magnesium bisglycinate.
- The bottle supplies 90 servings at approximately $0.22 per serving.
- More than 40,000 reviews and 90,000-plus recent sales provide substantial buyer-volume evidence.
- No USP, NSF, Informed Sport or published product-specific certificate is shown for the finished product.
- A serving requires two tablets and includes citric acid, cellulose derivatives, stearic acid, silicon dioxide and a multi-ingredient coating.
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 and Label Transparency. The NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets is the better fit for buyers wanting a widely purchased pure-bisglycinate tablet and people who want magnesium without melatonin or L-theanine, and the stronger choice if Value matters more to you than the overall score. If the $32.41 saving matters more than Third-Party Testing, the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets 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 Glycinate, 100 mg, 180 Tablets is a poor fit for buyers requiring product-specific external certification.
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 Glycinate, 100 mg, 180 Tablets if
- Buyers wanting a widely purchased pure-bisglycinate tablet
- People who want magnesium without melatonin or L-theanine
Skip it if
- Buyers requiring product-specific external certification
- People preferring a one-capsule or one-tablet serving
Common questions
Is the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) better than the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets?
In our Magnesium Glycinate for Sleep ranking the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) scores higher overall, 8.9 to 7.1, with the biggest advantage in Third-Party Testing. The NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets is stronger on Value, so it is the better pick if that matters most to you.
How much more does the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) cost than the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets?
$32.41 more as of August 5, 2026: $52 for the Thorne, Magnesium Bisglycinate, 6.5 oz (187 g) against $19.59 for the NOW Foods, Magnesium Glycinate, 100 mg, 180 Tablets. 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 Glycinate, 100 mg, 180 Tablets?
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 Glycinate, 100 mg, 180 Tablets. 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.