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Magnesium Citrate

Widely sold and cheap per elemental milligram. Compared on elemental magnesium, not on the weight of the citrate compound.

Public beta — real data, mostly not yet human-verified. Details

6 of 6 products
6 rows marked + delivery exclude an unpublished delivery charge — their real cost per dose is higher.
Delivery
BulkSupplements.com Magnesium Citrate Powder (1 kg)
powder · 1000 g · 400mg per serving · 0.50 per dose
$0.052
+ delivery
D
Could not locate independent data
$29.97
checked today
not free
$29.03 short
286
= 572 doses
19 months at 1/day
Buy
BulkSupplements.com
BulkSupplements.com Magnesium Citrate Powder (500 g)
powder · 500 g · 400mg per serving · 0.50 per dose
$0.08
+ delivery
D
Could not locate independent data
$22.97
checked today
not free
$36.03 short
143
= 286 doses
9.4 months at 1/day
Buy
BulkSupplements.com
BulkSupplements.com Magnesium Citrate Capsules (360 count)
capsule · 400mg per serving · 2.00 per dose
$0.133
+ delivery
D
Could not locate independent data
$23.97
checked today
not free
$35.03 short
90
= 180 doses
5.9 months at 1/day
Buy
BulkSupplements.com
BulkSupplements.com Magnesium Citrate Powder (250 g)
powder · 250 g · 400mg per serving · 0.50 per dose
$0.148
+ delivery
D
Could not locate independent data
$20.97
checked today
not free
$38.03 short
71
= 142 doses
4.7 months at 1/day
Buy
BulkSupplements.com
BulkSupplements.com Magnesium Citrate Powder (100 g)
powder · 100 g · 400mg per serving · 0.50 per dose
$0.344
+ delivery
D
Could not locate independent data
$19.97
checked today
not free
$39.03 short
29
= 58 doses
58 days at 1/day
Buy
BulkSupplements.com
BulkSupplements.com Magnesium Citrate Softgels (240 count)
softgel · 40mg per serving · 5.00 per dose
$0.562
+ delivery
D
Could not locate independent data
$26.97
checked today
not free
$32.03 short
240
= 48 doses
48 days at 1/day
Buy
BulkSupplements.com

About these numbers

What “per dose” means here — 200mg elemental magnesium

200 mg of elemental magnesium is roughly half the adult RDA and is a common single-serving strength, which makes it a convenient common denominator across salts that carry very different amounts of magnesium per gram. It is a unit of comparison, not a recommended intake.

Compared on elemental magnesium as printed on the Supplement Facts panel, not on the weight of the citrate compound.

Source: NIH Office of Dietary Supplements — Magnesium - Health Professional Fact Sheet · checked 2026-08-25 · not human-verified
How reliable is this data?
Public beta — real data, mostly not yet human-verified. These products, prices and certification listings were collected from NSF's Certified for Sport database, the LGC Informed database, iHerb and BulkSupplements. Every claim links to the source it came from, and you are welcome to check any of them.
  • Servings per container are derived from net weight rather than read off the label, except where a note on the product says otherwise.
  • Most source records have not been checked by a person. The ones that have say so.
  • Amazon and Walmart are not included, so “cheapest” means cheapest among the retailers we track.
  • Prices go stale. Each one shows when it was last checked, and says so when it is older than the retailer allows us to cache it.
Found something wrong? Tell us — corrections are the point of publishing this early.
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Right now, nothing on this page earns us anything. We have applied to affiliate programs but none is live yet, so every “Buy” button is a plain retailer link. When that changes, each link will say what it earns us, on the link itself.

Commission will play no part in what we list, how it ranks, or which link we send you to — the Buy button points at the lowest price we have recorded even when that retailer pays us nothing.