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Cheapest Magnesium (as Magnesium Chloride) on iHerb

Ranked by real cost per 10 mg of Magnesium (as Magnesium Chloride) — cheapest value first.

Prices updated Jul 25, 2026 · 12 products · Prices in USD

The priciest option here costs about 111.6× more per 10 mg of Magnesium (as Magnesium Chloride) than the best-value pick Nutricology. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 10 mg
1
Nutricology, Magnesium Chloride Liquid, 8 fl oz (236 ml)
Nutricology, Magnesium Chloride Liquid, 8 fl oz (236 ml)
Nutricology
67 mg9419.590.031View on iHerb →
2
Zahler, Magnesium Liquid, Unflavored, 4 fl oz (118 ml)
Zahler, Magnesium Liquid, Unflavored, 4 fl oz (118 ml)
Zahler
230 mg3025.970.038View on iHerb →
3
Natural Balance, AlkaMax, Comfortable pH Liquid Formula, Unflavored, 1 fl oz (30 ml)
Natural Balance, AlkaMax, Comfortable pH Liquid Formula, Unflavored, 1 fl oz (30 ml)
Natural Balance
40 mg6015.690.065View on iHerb →
4
Eidon Ionic Minerals, Electrolytes, Liquid Concentrate, 2 oz (60 ml)
Eidon Ionic Minerals, Electrolytes, Liquid Concentrate, 2 oz (60 ml)
Eidon Ionic Minerals
28 mg3019.990.240View on iHerb →
5
Organifi, Original Gold, Superfood Supplement, 6.91 oz (196 g)
Organifi, Original Gold, Superfood Supplement, 6.91 oz (196 g)
Organifi
80 mg3069.950.292View on iHerb →
6
Alta Health, Magnesium Chloride, 100 Tablets
Alta Health, Magnesium Chloride, 100 Tablets
Alta Health
520 mg117.060.328View on iHerb →
7
C4 / Cellucor, C4 Sport®, Pre-Workout, Watermelon, 7.1 oz (201 g)
C4 / Cellucor, C4 Sport®, Pre-Workout, Watermelon, 7.1 oz (201 g)
C4 / Cellucor
12 mg3021.920.609View on iHerb →
8
C4 / Cellucor, C4 Sport®, Pre-Workout, Blue Raspberry, 7.5 oz (213 g)
C4 / Cellucor, C4 Sport®, Pre-Workout, Blue Raspberry, 7.5 oz (213 g)
C4 / Cellucor
12 mg3021.920.609View on iHerb →
9
C4 / Cellucor, C4 Sport®, Pre-Workout, Fruit Punch, 7.4 oz (210 g)
C4 / Cellucor, C4 Sport®, Pre-Workout, Fruit Punch, 7.4 oz (210 g)
C4 / Cellucor
12 mg3021.920.609View on iHerb →
10
C4 / Cellucor, C4® Ripped Sport, Pre-Workout, Fruit Punch, 7.5 oz (213 g)
C4 / Cellucor, C4® Ripped Sport, Pre-Workout, Fruit Punch, 7.5 oz (213 g)
C4 / Cellucor
12 mg3025.490.708View on iHerb →
11
C4 / Cellucor, C4 Ripped® Sport, Pre-Workout, Arctic Snow Cone, 7.4 oz (210 g)
C4 / Cellucor, C4 Ripped® Sport, Pre-Workout, Arctic Snow Cone, 7.4 oz (210 g)
C4 / Cellucor
12 mg3025.490.708View on iHerb →
12
Organifi, Gold, Chocolate, 7.16 oz (202.9 g)
Organifi, Gold, Chocolate, 7.16 oz (202.9 g)
Organifi
10 mg2069.953.50View on iHerb →

How we rank Magnesium (as Magnesium Chloride)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.