Sedative-hypnotics are a class of medications primarily used to induce sleep and reduce anxiety. They work by depressing the central nervous system, leading to calming effects. Common examples include benzodiazepines and barbiturates, which are often prescribed for conditions like insomnia and anxiety disorders. These medications can be effective for short-term use, but they may lead to dependence or tolerance if used long-term. It's important for individuals to follow their healthcare provider's guidance when using sedative-hypnotics to minimize risks and ensure safe usage.