Doctor's Best and Pure Encapsulations are consistently the two most recommended magnesium glycinate supplements — by doctors, by Reddit, and by us. But they're very different products at very different price points. Let's break down exactly where each one wins.
Quick Comparison
| Feature | Doctor's Best | Pure Encapsulations |
|---|---|---|
| Elemental Mg per serving | 200mg | 120mg |
| Serving size | 2 tablets | 4 capsules |
| Price per bottle | $15–$22 | $25–$40 |
| Cost per serving | ~$0.07 | ~$0.45 |
| Form | Tablets | Capsules |
| Chelate type | Albion TRAACS | Magnesium glycinate |
| Third-party tested | No (GMP only) | Yes (Eurofins, NSF) |
| Hypoallergenic | No | Yes |
| Fillers | Rice powder, cellulose | Minimal (ascorbyl palmitate) |
| Amazon rating | 4.7/5 (45K+ reviews) | 4.6/5 (12K+ reviews) |
Doctor's Best: The Value Champion
Doctor's Best uses Albion's patented TRAACS (The Real Amino Acid Chelate System) magnesium lysinate glycinate. This is a well-studied chelation method that delivers excellent absorption at a fraction of the cost of premium brands.
At roughly 7 cents per serving, it's almost impossible to beat on value. You get 200mg of elemental magnesium per 2-tablet serving, and a single bottle lasts 4 months. The tablets are larger than we'd like, but that's the trade-off for cramming 200mg into just two pills.
Choose Doctor's Best if:
- Budget matters to you
- You don't have food sensitivities or allergies
- You want the highest mg per serving
- You don't mind larger tablets
Pure Encapsulations: The Purity Premium
Pure Encapsulations is the brand you'll find in functional medicine clinics and naturopath offices. Their entire product line is designed for people with sensitivities — no gluten, no GMOs, no artificial anything, no common allergens. Every batch is third-party tested by Eurofins.
The downside is real: you need 4 capsules to get just 120mg of elemental magnesium, and the cost per serving is 6x higher than Doctor's Best. But for people who react to fillers, have autoimmune conditions, or need pharmaceutical-grade purity, this premium is justified.
Choose Pure Encapsulations if:
- You have food sensitivities or allergies
- Your doctor specifically recommended it
- You need verified third-party testing
- You prefer capsules over tablets
- Purity matters more than price
Absorption: Is There a Real Difference?
Both products use chelated magnesium glycinate, so the fundamental absorption mechanism is the same. Doctor's Best uses the Albion TRAACS chelate, which has clinical research behind it. Pure Encapsulations doesn't specify their chelation source but maintains strict quality standards.
In practice, most users report similar effects from both products. The absorption difference, if any, is likely negligible. Where Pure Encapsulations may have an edge is for people whose digestive systems are compromised — the cleaner formula with fewer excipients means less potential for irritation.
The Verdict
For most people: Doctor's Best wins. The value is exceptional, the quality is proven, and 45,000+ positive reviews don't lie. Unless you have a specific reason to need hypoallergenic formulation, save your money.
For sensitive individuals: Pure Encapsulations is worth the premium. If you've tried other magnesium supplements and had reactions, or if your healthcare provider specifically recommends it, the purity justifies the cost.
Either way, you're getting a quality magnesium glycinate supplement. The "wrong" choice here is still better than 90% of what's on store shelves.