BioPro-Plus 100 is available in packets that contain about 400 mg. of Maltodextrin, 1 mg. of Zinc Gluconate and 100 mcg. Purified Thymic Proteins. BioPro-Plus 100 has been used for many years by individuals to maintain optimum health, prevent and/or shorten the duration of symptoms of the common cold and flu. Another great benefit of BioPro-Plus 100 is that people receiving radiation and chemotherapy in conjunction with taking BioPro-Plus 100 maintain proper blood cell counts and recover more quickly. BioPro-Plus 100, is easy to take and has not been known to cause any side effects, and is a valuable adjuvant to other therapeutic regimens. If you are looking to just simply make your immune system stronger, there is no better product on the market than BioPro-Plus.