NOW Foods Magnesium Ascorbate Powder delivers vitamin C in a buffered mineral ascorbate form — combining ascorbic acid with magnesium to create a non-acidic, highly tolerable vitamin C supplement ideal for those with sensitive stomachs or those taking high therapeutic doses of vitamin C. Unlike plain ascorbic acid, magnesium ascorbate has a near-neutral pH that eliminates the gastric irritation and dental enamel concerns associated with high-dose vitamin C supplementation. The added magnesium provides a meaningful contribution to daily magnesium intake, making this a genuinely dual-benefit supplement. The powder format allows for flexible dosing from 500 mg to several grams daily depending on need. NOW Foods provides pharmaceutical-grade magnesium ascorbate in an 8 oz powder manufactured in their GMP-certified facility with potency verification.