Side Effects of Clonidine ER
Although most people do not experience problems while using clonidine ER, side effects are possible. Common ones include headaches, irritability, and drowsiness. Serious problems have also been known to occur with this medication. Contact your healthcare provider immediately if you experience difficulty breathing, fainting, extreme drowsiness, or other potentially dangerous side effects.
Just like any medicine, clonidine ER (Kapvay™) can cause side effects. However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with clonidine ER. Your healthcare provider can discuss a more complete list with you. This article refers only to Kapvay, the clonidine ER version approved to treat ADHD. There is another clonidine ER medication, approved for treating high blood pressure: Nexiclon™ XR.)
Some clonidine ER side effects are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
- Signs of low blood pressure, such as:
- A very slow heart rate
- Extreme drowsiness
- Signs of an allergic reaction, such as:
- An unexplained rash
- Unexplained swelling
- Difficulty breathing or swallowing.