20 ml plastic bottle with dropper in carton box. ExtraZnc drops. Zinc required for the activity of approximately 300 enzymes and it plays a role in immune function, protein synthesis, wound healing, DNA synthesis, and cell division. Our bodies have no specialized zinc storage system so a daily intake of zinc is required to maintain a steady state., Zinc Bis glycinatre shows high safety & bioavailability by 43% than other Zinc salts like gluconate, oxide and sulfate. Store below 25 degree C.