As of 2015, zinc sulfate is available in the pharmacy department of stores including CVS and Wal-Mart and online at CVS.com, Walmart.com and HealthWarehouse.com, according to the companies. The in-store and online pharmacies offer zinc sulfate in 220-milligram oral capsules that contain 50 milligrams of zinc. Individuals should take their zinc supplements an hour or more before or after consuming any food or beverage, because foods or fluids other than water decrease the body's ability to absorb zinc, notes CVS.
The body needs zinc to function normally, explains CVS. Doctors may supplement their patients' diets to prevent or treat low zinc levels. The U.S. Food and Drug Administration has approved zinc sulfate as a nutritional supplement and for treating zinc deficiency. Physicians also prescribe zinc sulfate for other purposes, including to promote wound healing, according to WebMD.
Zinc sulfate is a mineral, according to Drugs.com. Women who are planning pregnancy, are pregnant or are breast feeding should consult their doctors before using the mineral. People who use zinc sulfate should store the capsules in a dry, dark place between 68 and 77 degrees Fahrenheit. Patients should not store the medication in their bathrooms and they should keep it out of the reach of children and pets. Common side effects from taking zinc sulfate include nausea and vomiting.