Klean Magnesium has a clean, interpretable label and exact NSF product records. The audit does not assume that taking magnesium improves sleep, recovery or performance in people who are already adequate. Product quality and evidence of need are different questions.
Score breakdown
| Area | Finding | Score |
|---|---|---|
| Formulation | Simple glycinate form and modest capsule dose | 21 / 25 |
| Transparency | Elemental amount and form disclosed | 19 / 20 |
| Laboratory verification | Exact NSF directory entries | 20 / 20 |
| Safety | Dose visible; health context still important | 12 / 15 |
| Company reliability | Strong product documentation | 8 / 10 |
| Value | Premium for a common mineral | 4 / 10 |
Formula and label
Each capsule provides 120 mg elemental magnesium as glycinate. The modest unit dose allows flexibility, but the brand’s suggested range can multiply total intake. Users must count other supplements and fortified foods rather than treating “more” as safer or more effective.
Laboratory and certification trail
Klean Magnesium appears in the NSF Certified for Sport directory, and the published label carries the mark. This is strong product-identity and sport-risk evidence. It does not diagnose deficiency or prove a recovery outcome.
Company accountability
Klean uses the same named external programme across its line and publishes downloadable product information. Those practices support accountability; professional-team usage does not affect the score.
Where this fits
Most defensible where a professional or dietary assessment identifies a gap. It is a weak purchase if the only rationale is a vague promise of deeper sleep or faster recovery.
Decision before price
Klean Magnesium is best considered for tested athletes with a justified need for a modest-dose magnesium supplement. That is narrower than saying it is the best product in the category. The main reason to walk away is equally important: supplement benefit is most plausible where intake or status is inadequate; recovery claims are easy to overstate.
A higher total score means the public evidence trail is stronger across the six scored areas. It does not mean every reader needs the ingredient, will tolerate the formula or should pay the local asking price. Need and fit come before ranking.
How to compare it globally
The reviewed identity is u.S. 90-capsule product, 120 mg magnesium glycinate per capsule. A matching brand name in another country, flavour, size or reformulation is not automatically the same audited product. Before purchase, compare the live Supplement Facts or nutrition panel, serving size, warnings and the exact certification directory entry.
Start with the dietary or clinical reason for the ingredient. Compare active form, disclosed dose, product-level testing, medication relevance and the no-purchase option. General “recovery” language cannot establish need.
What the score cannot prove
ShreddedAF did not buy a retail unit, verify chain of custody, commission a laboratory assay or test personal response. Public certification can strengthen confidence in identity, label controls or banned-substance risk management, depending on the programme; it cannot prove a better training result or universal safety. Manufacturer documentation establishes the marketed formula, not an independent outcome.
Buying checklist
- Confirm the exact country, flavour, serving and current label.
- Match any certification claim to the exact product in the certifier’s live directory.
- Compare price per effective serving, not price per tub or scoop.
- Check duplication with food, medication and other supplements.
- Keep the no-purchase option visible when the underlying need is weak.
The 60-second decision
If you cannot state the specific job this product performs, the evidence-backed amount required and why food or a simpler alternative is insufficient, do not buy it yet. If the use case is clear, confirm the exact local label and calculate the cost of enough servings to evaluate it fairly. A high audit score can reduce product uncertainty; it cannot create a need that was not there.
The no-purchase route remains a valid result. Put the money toward ordinary food, sleep, programming, medical assessment or equipment when one of those is the real bottleneck. ShreddedAF will not turn a weak use case into urgency simply because a retailer link becomes available.
Update triggers
This audit must be reviewed if the formula, serving, warnings, certification, ownership, market availability or evidence behind a material claim changes. Popularity, a retailer award or a new affiliate opportunity is not an update trigger for the score.
Limits and update trigger
Not a treatment for cramps, insomnia or deficiency. Kidney disease, medication and total supplemental intake can materially change safety.
Evidence register
Source rule: Manufacturer pages establish the current label and company claims. Independent directories establish only the certification, product, region and batches they actually list. Popularity, awards and affiliate economics add zero points.
Official product page
No retailer or affiliate relationship is active on this page. Price, formula, serving size and certification can differ by country and variant.
Check the manufacturer page ↗