Your immune system is your first line of defense against everyday threats, and regardless of what conventional medical professionals say, there’s much you can do to support it. Zinc may be the most important helper nutrient for your immune system to perform optimally. Zinc is essential not only for a healthy immune system and protection against the effects of cellular aging, it’s required for the proper functioning of your brain, heart, liver, pancreas, kidneys, bone and muscles. To help you get the zinc you need, and when you need it most, Dr. Mercola formulated Liquid Zinc Drops to provide just that – zinc. With only a touch of organic apple juice for flavor, Dr. Mercola Liquid Zinc Drops is made with zinc sulfate. It’s free from citric acid, added flavors (including “natural” flavor), alcohol, corn and other questionable ingredients. With only 15 calories per serving, Liquid Zinc Drops is an easy and delicious way to meet your zinc needs without swallowing pills. Directions: Adults, as a dietary supplement, take four (4) droppers (4 mL) daily.