Doctor's Best High Absorption Magnesium 100mg vs Magnesium Citrate 120 Tablets
Side-by-side comparison of scores, ingredients, prices and real customer feedback for Doctor's Best High Absorption Magnesium 100mg and Magnesium Citrate 120 Tablets.
Last verified: 07 Apr 2026 · Based on 112 reviews
Doctor's Best High Absorption Magnesium 100mg scores 82.0/100 vs Magnesium Citrate 120 Tablets at 72.0/100. Doctor's Best High Absorption Magnesium 100mg wins on effectiveness, ingredient quality, value for money.
Which is better: Doctor's Best High Absorpti... or Magnesium Citrate 120 Tablets?
Doctor's Best wins with an 82 vs 72 overall score, backed by Albion TRAACS chelation technology and stronger effectiveness ratings. The £8.46 premium over Solgar is justified for those prioritising bioavailability and sleep results. Budget-conscious buyers or those already comfortable with citrate forms may prefer Solgar's lower price point.
— AIScored Editorial Team
How Do the Scores Compare?
Doctor's Best High Absorpti...
Doctor's Best
|
Magnesium Citrate 120 Tablets
Solgar
|
|
|---|---|---|
| Overall Score | 82.0 | 72.0 |
| Effectiveness |
83.0/100
Best
|
76.0/100 |
| Ingredient Quality |
88.0/100
Best
|
84.0/100 |
| Value for Money |
78.0/100
Best
|
62.0/100 |
| Side Effects |
84.0/100
Best
|
71.0/100 |
| Certifications |
72.0/100
Best
|
50.0/100 |
| Best Price | £26.40 Amazon UK → |
£17.94
Amazon UK →
Cheapest
|
| Price per Serving | £0.22 120 servings | N/A |
| Form | Tablets | tablet |
| Dose | 100mg elemental (per 2 tablets) | None |
| Third-Party Tested | ✓ Yes | ✗ No |
| Reviews Analysed | 57 | 55 |
Doctor's Best High Absorption Ma...
Pros
- ✓Strong, consistent sleep improvement reported across the majority of reviews
- ✓Albion TRAACS chelate — a gold-standard chelation technology with superior bioavailability
- ✓Effective for muscle relaxation, cramp reduction, and post-exercise recovery
- ✓Gentle on the stomach; chelated form minimises the laxative effect common with other magnesium types
Cons
- ✗Tablets are notably large — at least two reviewers found them difficult or impossible to swallow whole
- ✗Only 60 servings per bottle at the recommended 2-tablet dose, despite the 120-tablet count on the label
- ✗No NSF Certified for Sport or USP verification — third-party testing scope is not fully specified
- ✗One Amazon report of a mismatched label on the bottle raises an authenticity/sourcing concern for that channel
Best For
Magnesium Citrate 120 Tablets
Pros
- ✓Highly bioavailable magnesium citrate form — better absorbed than oxide or carbonate
- ✓Consistently reported improvements in sleep quality and muscle relaxation
- ✓Effective for muscle cramps, PMS symptoms, and menopausal discomfort
- ✓Vegan, gluten-free, and kosher certified with clean excipients
Cons
- ✗Tablet size is unusually large — multiple reviewers report difficulty swallowing and choking risk
- ✗No third-party analytical testing (e.g., Informed Sport, NSF)
- ✗Premium price point relative to generic magnesium citrate alternatives
- ✗High single-serving dose (400mg) may cause loose stools in sensitive individuals
Best For
What does the data say about Doctor's Best High Abs... vs Magnesium Citrate 120 Tablets?
Both products use well-absorbed forms of magnesium, but they take different approaches. Doctor's Best uses magnesium glycinate chelated with Albion's TRAACS technology — a highly bioavailable form that's particularly gentle on digestion and well-suited to people who've had stomach trouble with cheaper forms like oxide. Solgar uses magnesium citrate, which is also meaningfully better absorbed than oxide or carbonate, though glycinate generally edges it out for gut tolerance. Doctor's Best delivers 100mg elemental magnesium per serving (two tablets), while Solgar lists no elemental dose on the label, which makes direct comparison harder. Doctor's Best scores 82/100 overall versus Solgar's 72/100, largely driven by stronger effectiveness ratings (83 vs 76) and, critically, third-party testing that Solgar lacks.
If you're spending on magnesium specifically to improve sleep or manage post-workout recovery, Doctor's Best at £26.40 is the more reliable choice — the glycinate form, verified testing, and consistent user reports make it worth the premium. Solgar at £17.94 is the more accessible option for someone wanting a step up from basic magnesium without committing to a higher price point, and it does show real results for muscle cramps and PMS symptoms.
Both products share one frustrating flaw: the tablets are large, and multiple reviewers for each have raised concerns about swallowing difficulty. Neither is ideal if that's a concern for you — a powder or smaller capsule format might suit you better. Doctor's Best is third-party tested, which matters if you're an athlete subject to doping controls. Solgar has no such certification, which is worth factoring in depending on your needs.
Doctor's Best High Absorption Magnesium uses Albion TRAACS magnesium bisglycinate chelate, a premium chelated form widely regarded as among the most bioavailable magnesium options available.
What are the key differences?
Frequently Asked Questions
Which is better, Doctor's Best High Absorption Magnesium 100mg or Magnesium Citrate 120 Tablets? ▼
Is Doctor's Best High Absorption Magnesium 100mg worth the price compared to Magnesium Citrate 120 Tablets? ▼
Which has fewer side effects? ▼
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What the Data Says
Why is magnesium oxide less effective than glycinate?
Oxide scores 21 points lower than glycinate in our testing — and it's not close on ingredient quality either. Across 17 magnesium products in our database, glycinate averages 74.3/100 overall. Oxide sits at 53/100. That's a gap you can feel.
The ingredient quality difference is even starker: 83.3 for glycinate vs 37.0 for oxide. A 46.3-point gap. The best glycinate in our database, Solgar Magnesium Glycinate 400mg, scores 80/100 overall with 88/100 on ingredient quality. The oxide product (Nature Made) manages just 52 on effectiveness and 37 on ingredient quality.
The reason is bioavailability. Magnesium oxide has roughly 4% absorption — most of it passes straight through your gut unused. Glycinate is chelated (bound to the amino acid glycine), which your intestines absorb much more efficiently. You also get fewer digestive side effects, since unabsorbed magnesium in the gut is what causes the laxative effect oxide is known for.
Oxide is cheap, which is why it's still everywhere. But cheap per pill means nothing if your body can't use it. Glycinate or citrate (avg 74.5/100) are both better choices.
Which form of magnesium is best for sleep, anxiety, or muscle cramps?
Glycinate for sleep and anxiety. Citrate for cramps. L-threonate for brain function. Each form has a different strength, and our scores back this up.
Sleep and anxiety → Glycinate. Averaging 74.3/100 across our database, with the best (Solgar Glycinate 400mg) hitting 80/100. Glycine, the amino acid it's bound to, acts as an inhibitory neurotransmitter — it calms your nervous system on its own. That's a two-for-one benefit you don't get from other forms. Thorne Bisglycinate (74/100) is another solid option at a lower dose.
Muscle cramps → Citrate. Averaging 74.5/100 overall with 85.0 on ingredient quality. Citrate absorbs well and is gentler on your wallet than glycinate. Solgar Citrate leads the pack at 77/100. If cramps are your main issue, this is the practical choice.
Brain function → L-Threonate. Life Extension Neuro-Mag scores 73/100. This is the only form shown to meaningfully raise magnesium levels in the brain by crossing the blood-brain barrier. It's pricier, but nothing else does what it does.
All-round absorption → Doctor's Best High Absorption tops our entire magnesium database at 82/100 overall (83 effectiveness, 88 ingredient quality) using chelated magnesium.
The one form to skip? Oxide at 53/100. Its 4% absorption rate makes it a poor choice no matter what you're taking it for.
Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.
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