Propolis is known to be the most effective natural antibiotic. It's great to boost the immune system to protect your respiratory system from common cold infections, inflammations, bronchitis, asthma, and other respiratory disorders.  Your digestive tract will also benefit from this product, as it also acts as a probiotic substance which allows your digestive tract to produce its natural enzymes giving your natural digestive flora to help coat your stomach and remove unhealthy bateria.
Propolis comes from the resin of the trees, in which the bees collect to protect their hives from bacteria and use as a great form to mummify any intruders that die in their hives.