A rich, natural source of vitamins A and D and omega-3 fatty acids. Vitamin A helps to maintain healthy respiratory and digestive tract linings which are the first line of defence against infection. It also supports a healthy immune system. Vitamin D is essential for optimal calcium absorption.Features and benefits, High potency, Rich source of vitamins A and D, Supports a healthy immune system, Maintains healthy mucous membranes of the respiratory and digestive tracts, Helps to maintain bone health, Supports healthy skin, Helps to relieve joint tenderness and stiffness associated with rheumatoid arthritis