Factors that determine the price of zinc supplements include the brand, retailer, dosage and number of supplements per bottle. For example, CVS sells 50-milligram Radiance zinc caplets in a 100-count size for about $7 per bottle, as of January 2016, notes CVS.
Doses of zinc supplements on Amazon.com range from 15 to 50 milligrams. As of January 2016, a 200-count bottle of Spring Valley 50-milligram tablets is about $9 a bottle, while a bottle of 100-count, Nature Made 30-milligram zinc tablets sells for about $5, reports Amazon.com
Zinc is an essential metal that helps conditions such as age-related vision loss, muscle cramps and taste disorder. Zinc is considered "likely safe" when taken orally in a dose not exceeding 40 milligrams a day, states WebMD.Learn more about Vitamins & Supplements