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. Author manuscript; available in PMC: 2010 Feb 10.
Published in final edited form as: Am Fam Physician. 2009 May 1;79(9):768.

Table 3.

Common Oral Zinc Preparations

Zinc preparation Elemental zinc (mg)
Zinc acetate, 30% zinc, 25 mg 7.5
Zinc acetate, 30% zinc, 50 mg 15
Zinc gluconate, 14.3% zinc, 50 mg 7
Zinc gluconate, 14.3% zinc, 100 mg 14
Zinc sulfate, 23% zinc, 110 mg 25
Zinc sulfate, 23% zinc, 220 mg 50
Zinc oxide, 80% zinc, 100 mg 80

NOTE: The standard ingredient labels for dietary supplements provide the name of the form of zinc in the product (e.g., zinc [as zinc sulfate]) and the amount of elemental zinc in milligrams.