Clonidine ER (
Kapvay™) is a prescription medication approved for the treatment of attention deficit hyperactivity disorder (
ADHD) in children and adolescents. Unlike many other ADHD treatments, this medication is not a stimulant and is not a
controlled substance. Clonidine ER is the first ADHD medication approved for use in combination with stimulants, although it can be used alone as well.
This article refers only to Kapvay, the clonidine ER version approved to treat ADHD. There is another clonidine ER medication (Nexiclon™ XR) approved for
treating high blood pressure.
Just like any medicine, clonidine ER can cause side effects. However, not everyone who uses the drug will experience problems. Most people tolerate it quite well.
Common side effects of clonidine ER include but are not limited to:
- Drowsiness
- Fatigue
- Irritability
- Upper respiratory tract infections (such as the common cold).
If reactions do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider. Serious side effects are less common.
(Click Side Effects of Clonidine ER to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)