Seasonal changes and lifestyle challenges are all stressful to a healthy immune system. In order to maintain a healthy system year-round try Effer-C from NOW Foods. This proprietary blend is packed with essential vitamins and minerals necessary to support optimal wellness. This formula was designed to gently but quickly replenish the vital electrolytes needed to keep you running efficiently. Effer-C provides 1 000 mg of vitamin C including Transport C-PLUS a buffered form combined with alpha lipoic acid for fast assimilation.