Several zinc supplements are available, and the best choice depends on your needs and overall health. Common forms include zinc gluconate, zinc citrate, and zinc picolinate. Zinc picolinate and zinc citrate are often well absorbed by the body, while zinc gluconate is widely available and commonly used. For most adults, a daily dose of 10 to 15 mg of elemental zinc is usually sufficient unless a healthcare professional recommends a higher amount. Taking more zinc than needed for long periods may cause side effects such as nausea, stomach upset, or reduced copper levels. When choosing a supplement, look for products from reputable manufacturers that have been independently tested for quality and purity. It is generally best to take zinc with food to reduce the chance of stomach discomfort. Before starting a zinc supplement, consult your doctor, especially if you are pregnant, breastfeeding, taking medicines, or have an existing medical condition.