Magnesium lactate
Magnesium lactate suppliers and sourcing guide
Magnesium lactate is the magnesium salt of lactic acid, made by neutralizing lactic acid, usually from fermentation of sugars, with magnesium oxide, hydroxide or carbonate and then crystallizing or spray-drying the product. The common form is the dihydrate, a white powder with about 10% magnesium and good water solubility. Brands buy it for beverages, effervescent tablets and capsules where a soluble, mild-tasting magnesium salt is wanted.
- Category
- Vitamins and minerals
- Also known as
- Magnesium dilactate · Magnesium lactate dihydrate · E329
- Facts checked
- November 2026
Forms and grades of magnesium lactate
Suppliers sell different products under the same name. Specify the one you need.
Dihydrate powder
The standard grade, with moderate magnesium content and good solubility.
Anhydrous
Dried grade with more magnesium per gram, specified where water content matters.
Granular grades
Agglomerated material for tableting and dust-free handling.
L(+) grades
Made from L(+)-lactic acid, with the isomer stated on the specification.
What to check on the COA
Compare each result with your own specification when the lot arrives.
- Assay
- Magnesium lactate or magnesium content by EDTA titration on the dried basis.
- Loss on drying
- Confirms the hydrate and affects magnesium per gram.
- Identity and pH
- Tests for magnesium and lactate and the pH of a solution.
- Lead and other metals
- Lead, arsenic, cadmium and mercury by ICP-MS.
- Microbiology
- Total plate count, yeast and mold for beverage applications.
Storage, lots and expiry
Storage and shelf life
Keep magnesium lactate in sealed containers in a cool, dry place away from strong odors. It is stable when dry but can cake if left open in humid air. Shelf life is set by the supplier's specification, with retest of assay and moisture on aged stock.
Lots and expiry dates
Record assay and loss on drying for each lot so magnesium per serving is calculated on the right basis. Check odor and solution clarity on new lots used in clear drinks.
Regulatory status
Facts from regulators and standards bodies, each linked to its source.
GRN 570, for magnesium lactate notified by Exponent as a source of dietary magnesium in fruit flavored beverages, closed on January 26, 2016 when FDA ceased to evaluate it at the notifier's request.
Source: hfpappexternal.fda.gov (opens in a new tab)Health Canada's Multi-Vitamin/Mineral Supplements monograph for natural health products lists magnesium lactate among the source ingredients for magnesium (Table 2).
Source: webprod.hc-sc.gc.ca (opens in a new tab)
This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Magnesium lactate suppliers
Manufacturers and distributors whose own websites say they sell it.
We are checking magnesium lactate suppliers now
Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.
Sell magnesium lactate? Request a listingFrequently asked questions
What forms of magnesium lactate can brands buy?
Common forms include dihydrate powder, anhydrous, granular grades and l(+) grades. Ask each supplier for the specification sheet of the exact grade they quote.
What should the COA for magnesium lactate include?
Expect assay, loss on drying, identity and pH, lead and other metals and microbiology, each with its method, specification and result for that lot.
How should magnesium lactate be stored?
Keep magnesium lactate in sealed containers in a cool, dry place away from strong odors. It is stable when dry but can cake if left open in humid air. Shelf life is set by the supplier's specification, with retest of assay and moisture on aged stock.
What is the regulatory status of magnesium lactate?
GRN 570, for magnesium lactate notified by Exponent as a source of dietary magnesium in fruit flavored beverages, closed on January 26, 2016 when FDA ceased to evaluate it at the notifier's request. Health Canada's Multi-Vitamin/Mineral Supplements monograph for natural health products lists magnesium lactate among the source ingredients for magnesium (Table 2).
More vitamins and minerals
- Magnesium GlycinateMagnesium bisglycinate · Magnesium bisglycinate chelate
- Vitamin CL-ascorbic acid · Ascorbic acid
- Vitamin D3Cholecalciferol · Colecalciferol
- ZincZinc citrate · Zinc gluconate
- Vitamin A palmitateRetinyl palmitate · Retinol palmitate
- Vitamin A acetateRetinyl acetate · Retinol acetate
- Beta-caroteneβ-Carotene · all-trans-beta-carotene
- Vitamin D2Ergocalciferol · Calciferol
- Vitamin E (d-alpha tocopherol)d-alpha-tocopherol · RRR-alpha-tocopherol
- Mixed tocopherolsTocopherols concentrate, mixed · Mixed tocopherol concentrate
- Vitamin K1Phylloquinone · Phytonadione
- Vitamin K2 (MK-7)Menaquinone-7 · MK-7
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