Cabot Health Children's Immune Strength Powder - Reduces common cold duration, Helps relieve severity of symptoms of cold and flu. Supports healthy immune function. Contains effective therapeutic doses of all active ingredients. Contains Vitamin C - essential for a healthy immune system. Zinc - essential for growth, cognitive function and exerts antiviral properties to support immune function. Selenium- critical for a strong immune system and exerts antiviral and anti-inflammatory properties. Iodine- critical for brain development and cognition, Iodine supplementation reinforces the immune response and supports the innate immune system in fighting bacterial and viral infections. Sambucus (elderberry) -  reduce the duration & severity of upper respiratory symptoms and cough. Elderberry contains quercetin, a flavonoid and antioxidant to support lung function and reduce excess mucus.