Dr. Formulated Probiotics Restore Immune - During and immediately after times of compromise, the digestive system needs extra care. Dr. Formulated Restore Immune with Zinc is a highly potent formula with 200 billion CFU of beneficial probiotics, made from 13 diverse strains that are resistant to stomach acid and bile, for extra digestive support. This 14-day program is specifically designed by Dr. Perlmutter for a quick and thorough replenishment of healthy gut flora, giving our digestive tract all the goodness it requires to thrive and function optimally. Shelf stable with desiccant-lined bottle.