NOW Foods Supplements, Magnesium Ascorbate Powder, Buffered, Antioxidant Protection*, 8-Ounce

Brand: NOW Foods
Category: Magnesium
Recorded price: $16.53; 19 Aug 2026
Price per serving: $0.07

Supplement facts

Serving size: 0.25 Level Teaspoon(s)
Servings per container: 227

Ingredient	Amount per serving	% daily value
Vitamin C	820 mg	911%
Magnesium	60 mg	14%

Directions on the label

Suggested Usage: Mix 1/4 level teaspoon of powder into at least 6 oz. of cold water or clear liquid. Take once daily with a meal. This powder can increase the temperature of liquids upon contact; therefore, the recommended serving must be mixed into at least 6 oz. of cold liquid to neutralize this reaction prior to ingestion.

Label data from the Dietary Supplement Label Database.

Label data as of 3 Sep 2026

Product score

92.5 / 100Excellent

Category average: 73.1 / 100
Average for similar products: 72 / 100

This jar provides a substantial once-daily vitamin C dose in a buffered magnesium ascorbate powder, with only a modest amount of magnesium.

Scoring criteria

Quantity
100 / 100
The labelled 820 mg of vitamin C is an adequate general supplemental dose for the assessed purpose.
Form
85 / 100
Magnesium ascorbate is a recognized buffered vitamin C form that can be gentler than acidic ascorbic acid for some users.
Convenience
100 / 100
The label directs one measured one-quarter-teaspoon portion once daily, and the container provides 227 servings.
Label accuracy
100 / 100
The matched label gives consistent vitamin C and magnesium amounts, serving directions, and container count without an apparent contradiction.
Purity
75 / 100
The label lists no unnecessary additives, but it provides no independently verified testing evidence that would justify a higher mark.
Cofactors
0 / 100
The 60 mg of magnesium is primarily the mineral component of the ascorbate salt and is not established here as an added therapeutic cofactor.