NOW Supplements, Magnesium & Calcium, With Zinc and Vitamin D-3, Nerve and Bone Support*, 100 Tablets

Brand: NOW
Category: Magnesium
Recorded price: $11.60; 5 Sep 2026
Price per serving: $0.35

Supplement facts

Servings per container: 33

Ingredient	Amount per serving	% daily value
Vitamin D3	25 mcg	125%
Calcium	400 mg	31%
Magnesium	800 mg	190%
Zinc	15 mg	136%

Other ingredients

Microcrystalline Cellulose
Maltodextrin
Croscarmellose Sodium
Stearic Acid
Vegetarian Coating
Magnesium Stearate
Silicon Dioxide

Label data from the Dietary Supplement Label Database.

Label data as of 6 Sep 2026

Product score

76 / 100Very good

Category average: 72.8 / 100
Average for similar products: 42.1 / 100

This is a magnesium-centered formula with substantial calcium, zinc, and vitamin D3, but its high magnesium exposure and unspecified chemical form reduce buying confidence.

Scoring criteria

Quantity
100 / 100
The assumed serving provides 800 mg of magnesium, which is more than a reasonable supplemental maintenance amount for the stated role.
Form
65 / 100
The mineral chemical forms are not identified, so their applicable absorption and tolerability properties remain unresolved.
Convenience
100 / 100
Because the serving size and directions are absent, one labelled serving is assumed as one daily portion, while the 100-tablet container count is verified.
Label accuracy
100 / 100
The supplied panel matches a high-confidence FDA label record without an established numerical contradiction.
Purity
75 / 100
The listed excipients appear ordinary, but no product-specific testing or certification supports a higher purity mark.
Cofactors
75 / 100
Calcium, zinc, and vitamin D3 are declared at meaningful amounts with established complementary roles in bone metabolism.