Nutricost Magnesium Citrate Capsules (120 Capsules)

SuppCheckr Score79/100

SuppCheckr score uses the magnesium scoring profile (Phase 4D-3). Key drivers: clear citrate form, explicit 420 mg elemental magnesium per serving, and strong price per 100 mg elemental value — offset by four-capsule serving size and third-party testing claimed but not verified with a captured certificate. Citrate GI tolerance context is general NIH background, not a product treatment claim.

Last updated: 2026-06-30 · Last reviewed: 2026-06-30

Explore magnesium content

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Product photo not provided — review is based on label facts and cited sources.

Supplement facts & pricing context

Serving size: 4 capsules
Servings per container: 30
Elemental magnesium per serving: Magnesium (as magnesium citrate): 420 mg
Manual observed price: $13.97 (2026-06-29)
Manual price per serving: $0.47
Price per 100 mg elemental magnesium: $0.11Normalized because this label serving is not exactly 100 mg elemental magnesium.

Active ingredient

Magnesium (as magnesium citrate): 420 mg

Other ingredients

Hypromellose (vegetarian capsule), Rice flour, Magnesium stearate

Allergens

Not stated on available label

Manual dated prices only — not live retailer prices. Check current price at the retailer before buying.

Score breakdown

Ingredient transparency88

Dose transparency82

Evidence alignment80

Formula quality/simplicity85

Third-party testing/certifications50

Price/value85

Additives/fillers/sweeteners83

Label clarity84

Brand transparency68

Pros

Supplement Facts on the Nutricost product page list 420 mg elemental magnesium as magnesium citrate per 4-capsule serving.
Among the lower observed price-per-100-mg-elemental values in this five-product comparison set at the cited price check.
Magnesium citrate form is clearly identified on the label.

Cons

Four capsules per serving may be less convenient than one-capsule or one-tablet servings.
Third-party testing is marketed but not verified with a captured certificate URL for this SKU.
According to NIH ODS materials, supplemental magnesium at higher intakes can cause GI effects in some people; individual tolerance varies.

Label clarity notes

Locked 120-capsule SKU (30 servings at 4 capsules per serving). Nutricost also sells 60- and 240-capsule sizes — confirm bottle count before purchase. Elemental magnesium is stated on the cited Supplement Facts panel.

May fit if you want

Buyers looking for a citrate-form label with explicit elemental magnesium disclosure and a lower observed price per 100 mg elemental.

May not fit if

You require verified third-party certification documentation before purchase.
You prefer a single-capsule serving without taking four capsules.

Check current price at retailer

Manual price $13.97 observed on 2026-06-29. Prices change — verify at the retailer.

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Compare in this category

Sorted by SuppCheckr score by default — not a personal recommendation.

Sort by Order Third-party testing

Product	Brand	Score	Price / 100 mg elemental	Price / serving	Testing
Klean Athlete Klean Magnesium (90 Vegetarian Capsules) third-party tested glycinate form clear elemental mg	Klean Athlete	SuppCheckr Score81/100	$0.24	$0.29	Verified
Nutricost Magnesium Citrate Capsules (120 Capsules) citrate form clear elemental mg lower price per 100 mg elemental	Nutricost	SuppCheckr Score79/100	$0.11	$0.47	Claimed
NOW Magnesium Malate 1000 mg Tablets (180 Tablets, SKU 1300) malate form compound + elemental disclosed one-tablet serving	NOW Foods	SuppCheckr Score78/100	$0.13	$0.14	Unknown
Nature Made Magnesium Oxide 250 mg Tablets (100 Tablets) oxide form clear elemental mg lower price per 100 mg elemental	Nature Made	SuppCheckr Score77/100	$0.02	$0.04	Unknown
Pure Encapsulations Magnesium (Citrate/Malate) (180 Capsules) mixed citrate/malate form one-capsule serving clear total elemental mg	Pure Encapsulations	SuppCheckr Score71/100	$0.17	$0.20	Unknown

Manual dated prices only — not live retailer prices. Last checked 2026-06-29. Check current price at the retailer.

Sources

Nutricost Magnesium Citrate Capsules — Supplement Facts (brand product page) — Nutricost (brand_label)
Nutricost Magnesium Citrate Capsules 120 count — product page (price) — Nutricost (retailer_listing)
Nutricost Magnesium Citrate — third-party tested marketing copy — Nutricost (brand_label)
SuppCheckr price-per-serving and price-per-100-mg-elemental calculation — SuppCheckr (internal_editorial)
Magnesium — Health Professional Fact Sheet — NIH Office of Dietary Supplements (NIH)

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