1. Dextromethorphan (DM): This is one of the most common over-the-counter cough suppressants. It is found in many cold and flu medications and is generally safe for adults and children over the age of six.
2. Codeine: This opioid is effective in reducing cough but is typically reserved for more severe cases due to its potential for addiction and side effects. It is usually prescribed by a healthcare provider and is not available over the counter.
3. Benzonatate: This prescription medication works by numbing the throat and lungs, making the cough reflex less active. It is typically used for severe coughs that have not responded to other treatments.
