NOW ® Immune Renew has been specifically formulated to support the immune system with standardized Astragalus extract and a specialized mushroom blend. Our specialized blend of eight mushrooms has been optimized for the characteristic mushroom polysaccharides known as beta-glucans. Mushroom beta-glucans have long been respected and scientifically studied for their immune system supporting properties. Astragalus has been included to complement our mushroom blend due to its ability to support a healthy immune system response. NOW ® Immune Renew provides the natural nutritional profile found in genuine whole foods. Format: 90 Capsules.