In other words, the coating of your teeth is made of rock! This outer enamel layer is hard, but fairly brittle (it can break easily), so beneath the coating most of your tooth is made of dentin, which is softer. However, we call other things enamel.
Echinacea can increase the immune system. Taking echinacea along with some medications that decrease the immune system might decrease the effectiveness of medications that decrease the immune system.1  Medications changed by the liver (Cytochrome P450 1A2 (CYP1A2) substrates) interacts with Echinacea.he body breaks down caffeine to get rid of it. Echinacea might decrease how quickly the body breaks down caffeine. Taking echinacea along with caffeine might cause too much caffeine in the bloodstream and increase the risk of side effects. Common side effects include jitteriness, headache, and fast heartbeat.
The strongest evidence for echinacea as a cold treatment comes from studies of Echinacea purpurea. Studies of Echinacea angustifolia and any echinacea root have had weaker results. Echinacea may not work as well in children and young adults as it does in older adults. When taken along with an antifungal cream, oral echinacea may help prevent recurrent vaginal yeast infections. While some studies suggest that echinacea may slightly reduce flu symptoms, the evidence isn't clear.