The flu seasons are dreadful. But it’s not only during the flu seasons that infections and viruses can strike. Year round, our bodies and immune system are exposed to bacteria, viruses and parasites and it counts on you to provide the fuel for the fight. Natural flu shots are a great way to do that. What are they? Natural “flu shots” are mixtures of healthy herbs, greens, fruits, spices and liquids that combine in order to boost your immune system’s function.