I was wondering if anyone had tried modafinil on a call night. I read an article about it in the newspaper and a doctor was quoted as saying this is the "next caffeine," but without all of the side effects. The military is apparently using it in order to allow its soldiers to stay awake and alert for prolonged periods. What are the ethical implications of using this drug? Would it be unethical to use it (i.e., like using speed) or would it be considered as harmless as caffeine?