Dr. Berg Magnesium Glycinate with Vitamin D3 Review 2026: Worth the Price?
It's actually fine. — Mostly Legit
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"Magnesium glycinate is bioavailable"
Chelated glycinate form shows superior absorption vs. oxide; clinical studies confirm efficacy.
PubMed: magnesium glycinate bioavailability studies -
"Magnesium dose supports therapeutic benefit"
150 mg per capsule is below clinical range (250-360 mg/day); requires 2 capsules daily to be effective.
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"Vitamin D3 supports bone health"
1000 IU is maintenance dose; clinical trials use 2000-4000 IU/day for bone benefits.
Internal: dose comparison to PubMed vitamin D3 bone health RCTs
Consumer advice
If you're deficient in magnesium or vitamin D3, this product will work. However, before buying, check if you actually need both nutrients—get blood tests for magnesium and 25(OH)D levels if possible. If you only need one, buy that ingredient separately for less. If you need both, compare the per-serving cost ($0.19 per capsule at $18.99 for 90 capsules) to buying magnesium glycinate and vitamin D3 separately—you'll likely save 20-30% by splitting purchases. The product itself is legitimate; the markup is just typical for branded supplements."
Claims vs Evidence
MODEST1 of 3 claims supported by evidence.
"Supports sleep and relaxation"
Partial
Magnesium helps sleep in deficient people; benefits in non-deficient are modest.
Based on: magnesium glycinate
"Supports bone health"
Partial
Both nutrients support bone; D3 alone doesn't prevent fractures in healthy adults.
Based on: magnesium glycinate, vitamin D3
"Supports muscle function"
Supported
Magnesium is essential for muscle contraction and recovery.
Based on: magnesium glycinate
1 supported · 2 partial
Ingredients
Based on peer-reviewed research from PubMed and Examine.com
Magnesium Glycinate
Essential mineral with clinical support for blood sugar, mood, and pain management in specific populations.
Research-backed dose: 250-360 mg elemental magnesium daily based on study doses
In this product: 150 mg elemental magnesium per capsule (underdosed)
Essential fat-soluble vitamin. Supports bone health, immune function, and may improve exercise tolerance in deficient individuals.
Research-backed dose: 400–80,000 IU daily depending on condition and deficiency status
In this product: 1000 IU per capsule (underdosed)
Essential fat-soluble vitamin. Supports bone health, immune function, and may improve exercise tolerance in deficient individuals.
Research-backed dose: 400–80,000 IU daily depending on condition and deficiency status
In this product: Dose not disclosed
Price & Value
ModerateDr. Berg Magnesium Glycinate with Vitamin D3
$18.99 USD
Nature Made Magnesium Glycinate 200mg + Nature Made Vitamin D3 1000 IU (bought separately)
~$12-14 for 60 magnesium capsules + ~$8-10 for 100 vitamin D3 capsules = ~$20-24 total for similar supply
Signals
- Shows actual ingredient doses
Research sources: PubMed · Examine.com
Analyzed product: https://shop.drberg.com/products/magnesium-glycinate
Analysis generated: 2026-05-01 · Engine v1.0.0