Check out our herbal tinctures for immune and respiratory health. Different herbal tinctures can be very useful as either a prevention booster or as a healing aid. Echinacea, for example, is a well-known immune booster. Another winter season champion is our respiratory blend. This blend of natural herbs can help hydrate and soothe your dry, scratchy throat and respiratory system while gently stimulating your immune system. If you are looking for how to boost your immune system naturally there are lots of herbs that can help.