Magnesium Glycinate Prices: Cost Per 100 mg Compared
A bigger number on a magnesium bottle does not always mean more magnesium. We compare magnesium glycinate prices per 100 mg of elemental magnesium, so different capsule counts and serving sizes can be compared on the same basis.
Use the table to sort eligible Amazon listings by cost, search product names, and filter capsules or tablets. We include only listings with an explicit elemental amount and enough information to calculate the bottle total. The 100 mg unit is for price comparison, not a recommended dose.
Prices are compared per 100 mg of elemental magnesium, not magnesium glycinate compound weight. This is a price comparison unit, not a recommended dose. Unclear amounts and mixed forms are excluded.
No products match those filters.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Affiliate disclosure: as an Amazon Associate we earn from qualifying purchases. This never changes how we rank or describe products.
How to choose magnesium glycinate
Start with the Supplement Facts panel. Elemental magnesium is the magnesium itself; the weight of magnesium glycinate also includes the glycine attached to it. A front-label compound weight cannot substitute for an elemental amount. Check the label again on the product you buy.
Check how many capsules make a serving. If a bottle contains 120 capsules and each two-capsule serving provides 200 mg of elemental magnesium, the bottle contains 12,000 mg. Divide the bottle price by 120 to find the cost per 100 mg. That comparison unit does not mean you should split a capsule or tablet.
We focus on glycinate and bisglycinate capsules and tablets. Listings that mention other magnesium forms, blends, or buffering are excluded. We also exclude powders, gummies, multipacks, and unclear quantities from this comparison. Missing products are not necessarily poor products; their listing may lack the detail needed for reliable arithmetic.
Price is one buying criterion. Compare the full ingredient list, capsule size, return terms, and any independently verifiable testing certification. We have not laboratory-tested these products. Listing-based price calculations do not establish purity, absorption, or health benefits.
The table uses the available Amazon offer price. Shipping, tax, coupons, subscriptions, and account-specific discounts can change your checkout total. Our refresh schedule runs every eight hours; if the feed is unavailable or too old, prices are hidden. This is a selection of eligible listings, not the whole market.
Ask your pharmacist or healthcare provider about suitability if you take medicines or have kidney problems. The NIH adult upper limit for magnesium from supplements and medicines is 350 mg per day unless a healthcare provider advises otherwise; magnesium in food does not count toward that limit. More is not automatically better.
Source for label interpretation and safety information: NIH Office of Dietary Supplements: Magnesium.
Frequently asked questions
Why compare price per 100 mg of elemental magnesium?
Capsule counts and label serving sizes differ. A fixed elemental amount puts the arithmetic on the same basis. We divide the price by the total elemental magnesium in the bottle, then multiply by 100 mg. It is a comparison unit, not dosing advice.
Is 500 mg of magnesium glycinate the same as 500 mg of magnesium?
No. Magnesium glycinate includes both magnesium and glycine. Read the elemental magnesium amount on the Supplement Facts panel. We do not infer elemental content from compound weight.
Why are some magnesium glycinate products missing?
We need an explicit elemental amount, a capsule or tablet count, and a clear amount per unit or a stated serving size. Ambiguous listings, multipacks, powders, gummies, and listings mentioning mixed magnesium forms are excluded.
Does the lowest price mean the best magnesium supplement?
No. This table ranks cost, not effectiveness or quality. Check ingredients, suitability, and independent testing information before buying. We have not tested these products ourselves.
How often do magnesium prices update?
The feed is scheduled every eight hours. We mark prices as potentially outdated after 12 hours and hide them after 18 hours. If no eligible current data is available, the page says so. Amazon checkout determines the final price.
Want the science first?
Our guide covers dosing, timing, safety, and what the research actually shows.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED 'AS IS' AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.