Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) vs Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets
Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) (#2, best premium) vs Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets (#4): in our Magnesium Glycinate for Sleep scoring the…
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Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g)
$20.97Check price at iHerbRead full review
Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets
Check price at iHerbRead full reviewTopsFive comparison scores
Side by side
| Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) | Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets | |
|---|---|---|
| Price | $20.97 | — |
| Magnesium Form | Magnesium bisglycinate | Albion magnesium lysinate glycinate chelate |
| Elemental Magnesium | 200 mg per serving | 200 mg per serving; 100 mg per tablet |
| Serving Size | 1 scoop (4 g) | 2 tablets |
| Servings Per Container | 30 | 120 |
| Added Sleep Ingredients | Melatonin 2.5 mg; L-theanine 50 mg; GABA 100 mg from 125 mg PharmaGABA | None; no melatonin or L-theanine |
| Third-Party Verification | ISURA Verified Clean and Non-GMO | No qualifying finished-product certification shown; Albion TRAACS is an ingredient trademark |
| Other Ingredients | Citric acid, organic tapioca maltodextrin, natural flavors, stevia leaf extract, rice hull concentrate, organic beetroot juice | Microcrystalline cellulose, croscarmellose sodium, magnesium stearate, stearic acid, hydroxypropyl cellulose, silicon dioxide, hypromellose |
| Allergen/Diet Notes | Vegetarian/vegan; label states no dairy, wheat, gluten, soy, sesame, egg, fish, shellfish, animal products or tree nuts | Non-GMO, gluten-free, soy-free and vegan |
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 Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) and the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets made our Top 5 Magnesium Glycinate for Sleep, at #2 (best premium) and #4. ISURA verification and complete disclosure keep it ahead of the uncertified products on the heavily weighted testing and transparency criteria. It ranks below Thorne because ISURA is less widely recognized than NSF and its L-theanine dose is well below the cited trial dose. It combines a transparent chelated form, excellent active-ingredient value and unusually strong buyer-volume evidence. It ranks below the NOW powder because its 200 mg serving is farther from the 250 mg trial dose and it uses substantially more excipients.
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 Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) totals 8.3 out of 10 and the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets 7.4. The widest gap is Third-Party Testing, where the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) scores 8 against 3 for the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets — independent certification or a published certificate of analysis. Value also separates them: 10 for the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets versus 5 for the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g). The Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets claws back ground on Dose vs Research.
On paper, the specifications that actually differ: Magnesium Form — Magnesium bisglycinate on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus Albion magnesium lysinate glycinate chelate on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets; Elemental Magnesium — 200 mg per serving on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus 200 mg per serving; 100 mg per tablet on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets; Serving Size — 1 scoop (4 g) on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus 2 tablets on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets; Servings Per Container — 30 on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus 120 on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets; Added Sleep Ingredients — Melatonin 2.5 mg; L-theanine 50 mg; GABA 100 mg from 125 mg PharmaGABA on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus None; no melatonin or L-theanine on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets; Third-Party Verification — ISURA Verified Clean and Non-GMO on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus No qualifying finished-product certification shown; Albion TRAACS is an ingredient trademark on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets.
The Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) lists at $20.97; the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets's current price is on the merchant page. Owners praise the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) for ISURA Verified Clean provides independent verification beyond an in-house quality statement. and all four active ingredients are individually disclosed rather than hidden in a proprietary blend.; the most common complaint is its 50 mg L-theanine dose is one quarter of the 200 mg daily dose used in the cited randomized human trial. Owners praise the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets for the panel explicitly separates 200 mg elemental magnesium from 2,000 mg of chelated compound. and the 240-tablet bottle supplies 120 label servings for approximately $0.17 each.; the most common complaint is albion TRAACS is a branded chelate, not USP, NSF or other finished-product certification.
Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g)
- ISURA Verified Clean provides independent verification beyond an in-house quality statement.
- All four active ingredients are individually disclosed rather than hidden in a proprietary blend.
- One scoop supplies the serving, and the label declares a vegan formula free from the listed common allergens.
- Its 50 mg L-theanine dose is one quarter of the 200 mg daily dose used in the cited randomized human trial.
- Every serving fixes melatonin at 2.5 mg, so magnesium cannot be adjusted independently from melatonin.
Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets
- The panel explicitly separates 200 mg elemental magnesium from 2,000 mg of chelated compound.
- The 240-tablet bottle supplies 120 label servings for approximately $0.17 each.
- Its roughly 209,000 reviews and 90,000-plus recent sales provide the strongest popularity evidence among otherwise similar uncertified products.
- Albion TRAACS is a branded chelate, not USP, NSF or other finished-product certification.
- A serving requires two tablets, while the full label direction requires four tablets and 400 mg elemental magnesium per day.
Which should you buy?
The Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) is the better fit for buyers intentionally seeking a fixed magnesium-and-melatonin combination and people who value independent ISURA verification — it is the higher-scoring pick here, chiefly for Third-Party Testing and Label Transparency. The Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets is the better fit for value-focused buyers who prefer tablets and buyers wanting an explicitly quantified chelated compound, and the stronger choice if Value and Dose vs Research matter more to you than the overall score. The Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) is a poor fit for people avoiding melatonin; the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets is a poor fit for people who have difficulty swallowing multiple tablets.
Choose the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) if
- Buyers intentionally seeking a fixed magnesium-and-melatonin combination
- People who value independent ISURA verification
Skip it if
- People avoiding melatonin
- Buyers wanting a magnesium-only formula
Choose the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets if
- Value-focused buyers who prefer tablets
- Buyers wanting an explicitly quantified chelated compound
Skip it if
- People who have difficulty swallowing multiple tablets
- Buyers requiring NSF or USP certification
Common questions
Is the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) better than the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets?
In our Magnesium Glycinate for Sleep ranking the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) scores higher overall, 8.3 to 7.4, with the biggest advantage in Third-Party Testing. The Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets is stronger on Value and Dose vs Research, so it is the better pick if those matter most to you.
What is the main difference between the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) and the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets?
The headline spec difference is Magnesium Form: Magnesium bisglycinate on the Natural Factors, Stress-Relax Nighttime Magnesium Bisglycinate Powder with Melatonin, GABA & L-Theanine, Tropical Fruit, 4.23 oz (120 g) versus Albion magnesium lysinate glycinate chelate on the Doctor's Best, High Absorption Magnesium Lysinate Glycinate, 100 mg, 240 Tablets. In use, the gap that matters most is Third-Party Testing (8 vs 3 in our scoring): independent certification or a published certificate of analysis.