Welcome to our catapres information (part 2) -- just click to return to front page.

Or click here for clinical trials research information on catapres.

What are the possible side effects of clonidine?

• If you experience any of the following serious side effects, stop taking clonidine and seek emergency medical attention:
• an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
• a very slow heart rate (fewer than 60 beats per minute); or
• unusually high or low blood pressure (severe headache, redness of the face, neck, and chest, dizziness, and fainting).
• Other, less serious side effects may be more likely to occur. Continue to take clonidine and talk to your doctor if you experience any of the following:
• unusual fatigue, dizziness, or tiredness;
• headache;
• constipation, nausea, vomiting, or diarrhea;
• insomnia; or
• a dry mouth (sucking on ice chips or sugarless hard candy may relieve this side effect).
• Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

What other drugs will affect clonidine?

• Clonidine may increase the effects of other drugs that cause drowsiness, including antidepressants, alcohol, antihistamines, sedatives (used to treat insomnia), pain relievers, anxiety medicines, and muscle relaxants. Tell your doctor about all medicines that you are taking, and do not take any medicine unless your doctor approves.
• Before taking clonidine, tell your doctor if you are taking any of the following medicines:
• a beta-blocker such as atenolol (Tenormin), acebutolol (Sectral), propranolol (Inderal), metoprolol (Lopressor), carvedilol (Coreg), carteolol (Cartrol), labetalol (Normodyne, Trandate), or nadolol (Corgard);
• levodopa (Dopar, Larodopa, Sinemet);
• prazosin (Minipress); or
• verapamil (Verelan, Calan, Isoptin, Covera-HS); or
• a tricyclic antidepressant such as amitriptyline (Elavil, Endep), imipramine (Tofranil), nortriptyline (Pamelor, doxepin (Sinequan), and others.
• You may require special monitoring or a dose adjustment if you are taking any of the medicines listed above.
• Drugs other than those listed here may also interact with clonidine or affect your condition. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

Where can I get more information?

• Your pharmacist has additional information about clonidine written for health professionals that you may read.
• Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Limitations and the Source of Our Online Medication Information Database

Although we have made considerable efforts to ensure that the information provided here is accurate, up-to-date, and complete, MedLibrary.org makes no guarantee to that effect. Drug information contained herein may be time sensitive. This medication information does not endorse drugs, diagnose patients or recommend any specific pharmacotherapy. This is an educational resource only -- intended to supplement but not to replace the expertise, skill, knowledge and judgment of medically qualified healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, please check with your doctor, nurse or local pharmacist. MedLibrary.org does not assume any responsibility for any aspect of healthcare administered with the aid of information provided here.

Full public license and copyright information is available separately from Cerner Multum, Inc.

Version: 4.03. Revision date: 7/18/03.