NEW
🌙 Magnesium
Cost per serving
$0.14
240 servings · ~240-day supply
mineral · 14 active deals
Low absorptionThe best-value Magnesium Oxide right now is about $0.03 per dose — across 14 tracked products the median is $0.090/dose, so shopping on cost-per-dose can cut your cost several-fold. Every Magnesium Oxide deal here is ranked by cost per dose— what you actually pay per serving, not the sticker price — because forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Right now the best value across our full Magnesium Oxide catalog is at $0.03 per serving.
Recommended daily intake
The 350 mg upper limit applies to magnesium from SUPPLEMENTS only, not food; exceeding it commonly causes loose stools. General FDA/NIH adult guidance — not medical advice.
Every Magnesium Oxide deal above is ranked by real cost per dose with no paid placement — see our and .
Magnesium Oxide 400mg, 500 | Form for Max Concentration… at $0.03 — the lowest cost-per-dose magnesium oxide in our catalog. See the full ranking on the Best Magnesium Oxide page.
We're tracking 14 active Magnesium Oxide deals across Amazon US and partner retailers, ranked by community votes and cost-per-dose — not paid placement.
Across 14 tracked Magnesium Oxide deals the median cost-per-dose is $0.090; the cheapest quartile comes in under $0.053 . Anything below the median is a solid deal for the same molecule.
The Daily Value for adults is 420 mg, and the tolerable is 350 mg per day. The 350 mg upper limit applies to magnesium from SUPPLEMENTS only, not food; exceeding it commonly causes loose stools. This is general guidance from the FDA Daily Values and the NIH Office of Dietary Supplements — not medical advice.
Keep total daily intake at or below the
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.
Cost per serving
$0.14
240 servings · ~240-day supply
Cost per serving
$0.04
360 servings · ~360-day supply
Cost per serving
$0.37
60 servings · ~60-day supply
Cost per serving
$0.11
240 servings · ~240-day supply
Cost per serving
$0.19
90 servings · ~90-day supply
Cost per serving
$0.12
120 servings · ~120-day supply
Cost per serving
$0.07
120 servings · ~120-day supply
Cost per serving
$0.20
60 servings · ~60-day supply
Cost per serving
$0.03
500 servings · ~500-day supply
Cost per serving
$0.05
120 servings · ~120-day supply
Cost per serving
$0.04
400 servings · ~400-day supply
Cost per serving
$0.07
120 servings · ~120-day supply
Cost per serving
$0.06
240 servings · ~240-day supply
Cost per serving
$0.17
60 servings · ~60-day supply
Amazon.com · 🌙 Magnesium
CPS
Price
$32.99
Amazon.com · 🌙 Magnesium
CPS
Price
$13.90
Amazon.com · 🌙 Magnesium
CPS
Price
$21.99
Amazon.com · 🌙 Magnesium
CPS
Price
$25.44
Amazon.com · 🌙 Magnesium
CPS
Price
$16.95
Amazon.com · 🌙 Magnesium
CPS
Price
$14.19
Amazon.com · 🌙 Magnesium
CPS
Price
$8.99
Amazon.com · 🌙 Magnesium
CPS
Price
$11.78
Amazon.com · 🌙 Magnesium
CPS
Price
$15.19
Amazon.com · 🌙 Magnesium
CPS
Price
$5.99
Amazon.com · 🌙 Magnesium
CPS
Price
$14.95
Amazon.com · 🌙 Magnesium
CPS
Price
$8.85
Amazon.com · 🌙 Magnesium
CPS
Price
$14.95
Amazon.com · 🌙 Magnesium
CPS
Price
$10.10
Deals are submitted by the community and ranked by net votes (hot minus cold) plus cost-per-dose normalised across container sizes. We take no affiliate kickbacks for ordering; sponsored slots, when present, are clearly badged.
![Magnesium 400mg [High Potency] Supplement – Magnesium Oxide…](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F41A9%2BSJ9rLL._SL500_.jpg&w=3840&q=75)
