Pink eye, also known as conjunctivitis, is a common eye condition. It can be caused by viruses or bacteria and causes red eyes, itching and discharge from the eyes. Natural dietary supplements can support the immune system and reduce inflammation in the body. Vitamins C and E are important antioxidants to support the body's defense system in fighting infections such as conjunctivitis. Omega-3 fatty acids also have anti-inflammatory properties that may help relieve symptoms of conjunctivitis or help prevent it