Y55: Agents primarily acting on smooth and skeletal muscles and the respiratory system

Y55.3: Antitussives

The code Y55.3 refers specifically to adverse effects in therapeutic use of antitussives, which are medications used to suppress or relieve coughing. These can occur when a person either accidentally or purposefully uses more than the recommended dose of the medication. Adverse effects can vary significantly but may include drowsiness, dizziness, nausea or vomiting, constipation, and, in severe cases, confusion and hallucinations. In some instances, a patient may experience difficulty breathing or an abnormal heart rate. Symptoms could show up soon after taking the medication or be delayed. Always, it's essential to adhere to the prescribed dosage guidelines to prevent these adverse effects and ensure the antitussive is optimally safe and effective.