A form of zinc

Zinc sulfate supplements

508 zinc products in the NIH label database list zinc as zinc sulfate (4% of the 13,751 zinc products); their median is 10 mg of zinc per serving, against 11 mg across all zinc products; the 39 whose only supplement ingredient is zinc list a median of 15 mg (DSLD version 9.4.0, January 2026).

How does zinc sulfate compare with the other forms?

The median amount of zinc per serving in products naming each form; the count in brackets. The amount is the zinc the label gives, as printed (the Supplement Facts row normally states the element; a row named as the compound usually gives the compound's weight and is left out of these figures).

Median zinc per serving by form

Zinc by formZinc oxide15 mg (2,798)Zinc citrate10 mg (2,614)Zinc gluconate10 mg (1,509)Zinc glycinate13 mg (1,215)Zinc picolinate15 mg (720)Zinc sulfate10 mg (508)Zinc monomethionine15 mg (436)Zinc carnosine14.5 mg (61)Zinc acetate16.88 mg (38)
Zinc by formZinc oxide15 mg (2,798)Zinc citrate10 mg (2,614)Zinc gluconate10 mg (1,509)Zinc glycinate13 mg (1,215)Zinc picolinate15 mg (720)Zinc sulfate10 mg (508)Zinc monomethionine15 mg (436)Zinc carnosine14.5 mg (61)Zinc acetate16.88 mg (38)
Zinc by formZinc oxide15 mg (2,798)Zinc citrate10 mg (2,614)Zinc gluconate10 mg (1,509)Zinc glycinate13 mg (1,215)Zinc picolinate15 mg (720)Zinc sulfate10 mg (508)Zinc monomethionine15 mg (436)Zinc carnosine14.5 mg (61)Zinc acetate16.88 mg (38)
Zinc by formZinc oxide15 mg (2,798)Zinc citrate10 mg (2,614)Zinc gluconate10 mg (1,509)Zinc glycinate13 mg (1,215)Zinc picolinate15 mg (720)Zinc sulfate10 mg (508)Zinc monomethionine15 mg (436)Zinc carnosine14.5 mg (61)Zinc acetate16.88 mg (38)
Zinc by formZinc oxide15 mg (2,798)Zinc citrate10 mg (2,614)Zinc gluconate10 mg (1,509)Zinc glycinate13 mg (1,215)Zinc picolinate15 mg (720)Zinc sulfate10 mg (508)Zinc monomethionine15 mg (436)Zinc carnosine14.5 mg (61)Zinc acetate16.88 mg (38)

Source: Supplement Facts rows and their forms, NIH ODS Dietary Supplement Label Database version 9.4.0, current labels.

Products
508412 on the market
Median zinc per serving
10 mgall zinc products: 11 mg
Share of zinc products
4%508 of 13,751

Is the amount the zinc or the whole zinc sulfate?

A Supplement Facts row normally states the zinc itself (a row like "Zinc (as zinc sulfate)"); a row named as the compound (a row like "Zinc sulfate") usually states the compound's weight, which includes what the zinc is bound to and is larger than the zinc it supplies. The front of a bottle may print either. Of the 508 products here, 505 give the zinc in its own row (6 of them an amount far outside what other labels list, or one their own %DV disagrees with); 3 give no amount of their own or one in another unit.

The adult Tolerable Upper Intake Level for zinc is 40 mg a day; it covers total intake from food, water and supplements. At the most servings their labels direct, 35 of the 499 zinc sulfate products with a plausible amount (7.0%) give more than that.

Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; upper limit: Institute of Medicine Dietary Reference Intakes (2011) (what counts as plausible).

What else do these products contain?

Ingredients most often listed alongside it, with the median amount in these products and in all products
IngredientShare of these productsMedian hereMedian, all products
Vitamin C73% 100 mg100 mg
Vitamin B660% 3 mg6 mg
Vitamin E59% 30 IU30 IU
Vitamin D57% 10 mcg15 mcg
Vitamin A56% 4,000 IU4,000 IU
Vitamin B1256% 9 mcg36 mcg
Magnesium53% 75 mg86 mg
Folate50% 400 mcg400 mcg
Pantothenic Acid (Vitamin B5)48% 10 mg12 mg
Biotin47% 150 mcg200 mcg

Which products are they?

60 of the 508 (on-market products first, the newest label first), ordered by the amount of zinc per serving, largest first; an amount that looks like a slip or a compound's weight comes last, marked.

Source: NIH ODS Dietary Supplement Label Database version 9.4.0; the form each label names for its row. Daily Values: the FDA's Daily Value page.

Which brands make them?

Bronson (25), Airborne (17), Nature Made (15), The Vitamin Shoppe (11), Life Extension (11), Jarrow Formulas (11), Kirkman (9), Meijer (9), BulkSupplements.com (8), Nuun (7).

Where next?