Skip to content
UKUSA
Life Extension Magnesium Caps 500mg
Product analysis · Life Extension

Life Extension Magnesium Caps 500mg

Blend (Oxide, Citrate, Succinate) · Capsule

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
10/20
Value
4/20
Dose transparency
11/15
Manufacturer transparency
5/10
Label/ingredient transparency
10/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing transparency: 3/25
$34.99Amazon
CapsuleFormat
500 mgDaily dose
100 capsulesPack size
$0.35Price/day
Buy Now on Amazon Compare alternatives

We may earn a commission from qualifying purchases. This never affects our scores.

The score, explained

Our scoring methodology
Testing & evidence12.8/100
3 points contributed · weighting 25
Ingredient/formulation quality50/100
10 points contributed · weighting 20
Value20/100
4 points contributed · weighting 20
Dose transparency75/100
11 points contributed · weighting 15
Manufacturer transparency50/100
5 points contributed · weighting 10
Label/ingredient transparency100/100
10 points contributed · weighting 10

The score compares product data, not medical effectiveness or individual suitability. Prime and affiliate commission contribute no points.

Testing & evidence

Testing claimed

Evidence status
Testing claimed
Manufacturer statement
Life Extension says: "We are happy to provide a summary of the reports we receive from the contract manufacturers and the independent laboratories that test both our raw materials and final products. We can do this for every supplement, from our best-sellers down to our niche formulations."
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-15 18:34:16

Dose & value

Active form
OxideCitrateOxide, Citrate, Succinate
Daily dose
500 mgelemental magnesiumAbove commonly studied range
Serving size
1 capsule daily (1-3/day suggested)
Pack size
100 capsules
Servings per day
1
Price per day
$0.35
Price last checked
2026-09-15 12:48:33

Daily cost follows the label serving. The value score uses the category’s documented comparison method. The label serving is not a recommendation for your personal intake.

Magnesium formulation details

Magnesium form
Blend (Oxide, Citrate, Succinate)
Compound mass / serving (mg)
Not disclosed
Elemental magnesium / serving (mg)
500
Elemental magnesium / day (mg)
500
Capsules or tablets / day
1
Additional active ingredients
Non-GMO, gluten-free, vegetarian

Product sources & research notes

Listing and manufacturer details describe the label; they do not independently verify product claims. Check the current pack before use.

Ingredients & suitability

Vegetarian

Excipients
Not disclosed — check the current label
Allergens
Not disclosed — check the current label
Carrier / source
Not disclosed — check the current label
Other active ingredients
Non-GMO, gluten-free, vegetarian

Manufacturer transparency

Brand
Life Extension
Legal company
Not recorded
Manufacturing model
Not recorded
Manufacturing location
Not recorded

View the full brand profile →

What the record makes clear

  • Active amount is disclosed.
  • Daily cost can be calculated from the recorded serving.

What to keep in mind

  • Verify the current label and the batch covered by any testing report.
  • A product score cannot determine whether you need a supplement.

Explore the alternatives

Compare alternative

Pure Encapsulations Magnesium Glycinate 120mg

Why this score?
Testing & evidence
20/25
Ingredient/formulation quality
10/20
Value
5/20
Dose transparency
8/15
Manufacturer transparency
5/10
Label/ingredient transparency
10/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Verified independent evidence
Manufacturer statement
Certificate of Analysis for "Pure Encapsulations Magnesium (glycinate)" showing Report Number 4321342-0, Report Date 14-Dec-2023, and testing by Eurofins Food Chemistry Testing Madison / Food Integrity Innovation-Madison; result: Magnesium 121 mg/serving.
Laboratory
Eurofins Food Chemistry Testing Madison
Certification body
Not recorded
Batch
50331761
Batch-specific report
Recorded
Report date
Not recorded
Evidence checked
2026-09-15 18:32:55
$0.30per day
$27.00per pack
View AnalysisBuy Nowon Amazon
Compare alternative

KAL Magnesium Glycinate with BioPerine

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
10/20
Value
11/20
Dose transparency
14/15
Manufacturer transparency
5/10
Label/ingredient transparency
10/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Manufacturer site says: "Every batch third-party tested for purity and potency. What you read on the label is what is in the tub." Product page also says "UK made, batch tested" and "Certified facilities, every batch."
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-15 18:28:20
$0.22per day
$13.29per pack
View AnalysisBuy Nowon Amazon
Compare alternative

Vitamatic Magnesium Citrate 500mg per Serving – 180 Vegetarian Capsules (Provides 150 mg Elemental) – Added B6

Why this score?
Testing & evidence
3/25
Ingredient/formulation quality
10/20
Value
20/20
Dose transparency
4/15
Manufacturer transparency
5/10
Label/ingredient transparency
10/10
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Amazon listing and Vitamatic product page use marketing-only language such as "Lab Tested" and "GMP" / "Made in a GMP-compliant Facility," but I found no independently verifiable COA, lab report, or certifying-body registry entry for this specific product.
Laboratory
Not recorded
Certification body
Not recorded
Batch
Not recorded
Batch-specific report
Not established in this record
Report date
Not recorded
Evidence checked
2026-09-13 19:34:25
$0.06per day
$9.99per pack
View AnalysisBuy Nowon Amazon