NOW magnesium labels

A Supplement Facts panel declares the element; the salt carrying it is heavier. Dividing each label's declared magnesium by its salt's elemental fraction gives the powder mass the serving must contain — and whether that fits a capsule.

Method and the corpus-wide figure: label mass-budget audit.

• 2 of 14 labels list magnesium stearate. Stearate is 4.1% magnesium by mass and that magnesium is not on the Supplement Facts line; the amount of stearate is not declared, so it cannot be quantified.
• 2 labels use a gelatin shell.
• 10 labels use a cellulose-based shell.

Filed declarations across this brand's labels: 7 distinct filed entries across 14 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.

• Adult (18 - 50 Years) — on 14 of 14 labels
• Gluten Free — on 14 of 14 labels
• Dairy Free — on 14 of 14 labels
• Kosher — on 11 of 14 labels
• Vegan — on 10 of 14 labels
• Vegetarian — on 10 of 14 labels
• Halal — on 5 of 14 labels

• 4 of 14 labels do not name the magnesium salt in the filed record, so no compound mass can be computed for them.
• 13 of 14 labels have no US retail listing matched as of 2026-09-13. That is a matching gap on our side, not evidence of unavailability.

See all brands, all labels, or the priced form tables.

Filed composition facets

15 published excipient facets occur across 14 labels from NOW in the NIH DSLD records, counted 2026-09-13.

• silicon dioxide: 10 of 14 labels.
• hypromellose: 8 of 14 labels.
• stearic acid: 7 of 14 labels.
• ascorbyl palmitate: 3 of 14 labels.
• microcrystalline cellulose: 3 of 14 labels.
• sunflower lecithin: 3 of 14 labels.
• beeswax: 2 of 14 labels.
• citric acid: 2 of 14 labels.
• croscarmellose sodium: 2 of 14 labels.
• glycerin: 2 of 14 labels.
• hydroxypropyl cellulose: 2 of 14 labels.
• magnesium stearate: 2 of 14 labels.
• maltodextrin: 2 of 14 labels.
• rice flour: 2 of 14 labels.
• water: 2 of 14 labels.

Matching formulations across brands

1 published clusters include labels from NOW, matched by filed ingredients and serving structure on 2026-09-13.

• 135 mg per unit, rounded to 5 mg; 6 filed ingredients: 1 labels from this brand, 2 labels and 2 brands in the cluster.

FDA recall records for this firm

The FDA enforcement database holds 1 recall records naming NOW (queried 2026-09-13); 0 of them concern a magnesium product.

These are exact brand-string matches in the recalling-firm field or product description, including other products. A name match does not establish that two similarly named firms are the same legal entity. The recalling firm and recalled product are shown in each row.

FDA assigns 3 recall classes by the assessed hazard, using the FDA classification definitions, checked 2026-09-13:

• Class I: Exposure to or use of the violating product carries a reasonable probability of serious harm to health or death.
• Class II: Exposure or use may produce temporary or medically reversible harm; the probability of serious harm is remote.
• Class III: Adverse health consequences from exposure or use are unlikely.

Full FDA record register and matching method →