Symptoms of zinc deficiency include slow growth and development, decreased sexual function and fertility, hair loss, acne and skin diseases, difficult wound healing, chronic diarrhea, emotional instability, poor stress resistance, inattention, and other mental and behavioral problems. Patients with chronic gastrointestinal diseases: such as Crohn's disease

​Zinc is one of the necessary trace elements for the body. Zinc is a nutrient for the development of thymus of immune organs. Sufficient zinc can effectively ensure the development of thymus, normally differentiate T lymphocytes and promote cellular immune function. Zinc can help growth and development,intellectual development and improve immunity. Lack of zinc will seriously affect our body,especially growth and development.

As the first generation of inorganic zinc, zinc sulfate is widely used in zinc dietary supplements. Vitamin C 1000mg Whitening Zinc 15 mg 60 Tablets Sustained Release Tablets are based on our coating film controlled-release product technology, which is our patented product. Our company is the sole manufacturer which had controlled release technology and the only manufacturer which can produce controlled release dietary supplements in the world.