Among the many medicines that start with the letter C are some well-known medication such as Claritin, Celebrex, and Cymbalta. Others, like Carafate and Cardizem, may be less familiar. All of these medicines have different uses, but they share the common goal of improving the quality of life for those who take them. Claritin is used to relieve allergy symptoms, while Celebrex is a pain reliever. Cymbalta is an antidepressant, and Carafate is a medication used to treat ulcers. Cardizem is used to treat high blood pressure. All of these medicines have the potential to improve the lives of those who take them, and they all start with the letter C.