“Magnesium ascorbate?”Here!Buffered vitamin C
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As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
A mineral salt combining magnesium with ascorbic acid (vitamin C), used as a less acidic, 'buffered' way to deliver both nutrients in one compound.
Why it’s used
Taken as a source of vitamin C and magnesium, often chosen by people looking for a gentler form of vitamin C on the stomach.
What the evidence is for
preventing vitamin C and magnesium deficiency and supporting normal nutrient function.
What the evidence says
The evidence base here rests on vitamin C and magnesium individually, both well established for preventing deficiency and supporting normal physiological function per NIH ODS; the magnesium-ascorbate salt form itself has not been separately studied for superior absorption or effect compared to other forms.
Dose studied
65–2000 mg — adult RDA up to tolerable upper intake level for vitamin C, per NIH ODS.
Context
NIH ODS dietary reference intakes for vitamin C and magnesium are based on studies of the nutrients broadly, not this specific combined salt form, so dosing data reflect the individual nutrients rather than the compound itself.
Rumors
Preventing the scurvy of vitamin C deficiency and the cramps, fatigue and abnormal heart rhythms of magnesium deficiency.
Not gradedhealth and safety evidence
Sources cited — no verdict reached.
Measured as an outcome.
- Vitamin C - Health Professional Fact Sheet (Regulatory) · Funding not checked
- Office of Dietary Supplements - Magnesium (Regulatory) · Funding not checked
How much is a reference amount
- 75 mg a dayfor adults 19 and over, women · Recommended Dietary Allowance
Upper limit 2,000 mg a day, from food and supplements together.
- 90 mg a dayfor adults 19 and over, men · Recommended Dietary Allowance
Upper limit 2,000 mg a day, from food and supplements together.
People who smoke need 35 mg/day more. That is a third population axis the table does not carry, so it is stated here rather than silently dropped.
Every applicable line is shown because we don’t know which one is yours, and a reference intake is a target for a population, not a threshold for harm.