DOSERANKEVIDENCE-BASED SUPPLEMENTS© 2026 DoseRank · Evidence-based supplements
Methodology·Outcomes·Categories·Blog
Support·Feedback
DOSERANKEVIDENCE-BASED SUPPLEMENTSFull analysis

The short answer · Magnesium status

Take magnesium citrate for magnesium status. This is the one to buy.

NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g)
1

NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g)

4.6· 9,843 ratings· $0.16/serving

DoseRank score86

Magnesium Citrate 450 mg — inside the studied 200-500 mg window

Of 3,590 products scored for Magnesium status, NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g) ranks #1 with a DoseRank score of 86. Magnesium Citrate is the strongest evidence signal for this outcome.

View on iHerb— $0.16/sv60-sec quiz instead
Cheaper alternative$0.08 per servingNOW Foods, Magnesium Caps, 400 mg, 180 Veg Capsules

Retailer links may be affiliate links. Rankings and placement are never paid.

The form“Why Magnesium Citrate — not Magnesium Bisglycinate or Magnesium Glycinate?”Evidence Strong evidence

Magnesium Citrate is the strongest evidence signal for this outcome.

  • Magnesium CitrateThe pick

    Strong evidence · 450 mg

    Well-absorbed magnesium bound to citric acid; more bioavailable than oxide but mildly laxative at higher doses — the common workhorse for general repletion.

  • Magnesium Bisglycinate

    Strong evidence · 300 mg

    Chelated magnesium bound to glycine. Best-absorbed common form and gentle on digestion - the default first pick for sleep latency.

  • Magnesium Glycinate

    Strong evidence · 350 mg

    Magnesium chelated to glycine (the bisglycinate chelate); well-absorbed and gentle on digestion, a popular form for relaxation and sleep support.

Buy the #1 pick
The dose“Is the dose actually effective?”Dose fit 86

Magnesium Citrate at 450 mg lands inside the studied 200-500 mg window.

Magnesium Citrate

Studied window 200-500 mg · this pick 450 mg

The ranking“Why should I trust this pick?”Trust 90

Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.

  • 3,590 products scored
  • Never paid placement
  • Evidence level: Strong · 92
  • 364 brands
  • 20 ingredients
See the full analysis — every score, every productHow the ranking works
The price“Can I do better than $0.16 a serving?”Value 75

$0.16 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.13 per serving.

  • 4
    Nutricost, Magnesium Glycinate, Unflavored , 8.9 oz (250 g)Score 86 · $0.13/serving
    iHerb
  • 10
    Micro Ingredients, Magnesium Glycinate, 240 Vegetarian Capsules (175 mg per Capsule)Score 85 · $0.15/serving
    iHerb

Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.

Ready?

The #1 pick is $0.16 a serving.

NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g) — in stock at a tracked retailer.

View on iHerb
Want it personal instead?

A saved, shareable breakdown: your matched products, dose math, and interaction flags to discuss with a clinician.

Or take the 60-sec quiz →

Questions

Frequently asked

NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g) ranks #1 for Magnesium status with a DoseRank score of 86. The score blends clinical strength, evidence, dose fit, trust signals and value across 3,590 products scored for this outcome.

Magnesium Citrate is the strongest evidence signal for this outcome.

Magnesium Citrate at 450 mg lands inside the studied 200-500 mg window. DoseRank scores this product's dose fit at 86 out of 100.

NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g) works out at $0.16 per serving. $0.16 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.13 per serving.

No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.

Use rankings as research support

DoseRank rankings are informational and not medical advice. If you are pregnant, breastfeeding, using medications, or managing a health condition, ask a qualified clinician whether a supplement fits your situation. Stop use and report concerning adverse events to a clinician, the product maker, or the retailer.

Disclosure

Retailer links may be affiliate links. Rankings and placement are not paid placement.

NOW Foods, Magnesium Citrate Pure Powder, 8 oz (227 g)

$0.16/serving · ★ 4.6 · In stock

60-sec quizView on iHerb