Before you take clonidine, tell your doctor if you have heart disease or severe coronary artery disease, a heart rhythm disorder, a history of heart attack or stroke, kidney disease, or if you have ever had an allergic reaction to a clonidine transdermal skin patch (Catapres TTS).
Do not stop taking this medication suddenly without first talking to your doctor. Stopping this medication suddenly can cause nervousness, agitation, headache, tremors, severe high blood pressure, or life-threatening symptoms. Talk with your doctor about how to avoid withdrawal symptoms when you stop taking clonidine.
Avoid drinking alcohol. It can increase some of the side effects of clonidine.
Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Clonidine can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Keep using this medicine as directed, even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.