Hypertension Home > Clonidine Side Effects
Depending on the particular product, common side effects of clonidine may include dry mouth, fatigue, constipation, and vomiting. Most side effects mild and do not require medical attention in most cases, but you should contact your healthcare provider immediately if you experience problems such as lightheadedness, fainting, chest pain, or difficulty breathing.
- Lightheadedness or fainting, which can be a sign of dangerously low blood pressure (hypotension)
- A fast or slow heart rate
- Chest pain or heart palpitations
- Depression or anxiety
- Congestive heart failure
- Signs of an allergic reaction, including unexplained rash, hives, itching, unexplained swelling, wheezing, or difficulty breathing or swallowing.