You should not take this medication if you are allergic to clonidine.
If you have certain conditions, you may need a dose adjustment or special tests to safely use this medication. 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).
FDA pregnancy category C. It is not known if clonidine is harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Clonidine can pass into breast milk and may harm a nursing baby. Do not take this medication without telling your doctor if you are breast-feeding a baby.
Do not give this medication to a child younger than 12 years old.
Avoid drinking alcohol. It can increase some of the side effects of clonidine.
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.
Seek emergency medical attention if you think you have used too much of this medicine.
Overdose symptoms may include high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, confusion, chest pain, shortness of breath) followed by low blood pressure (feeling light-headed, fainting), drowsiness, cold feeling, slow heart rate, shallow breathing, weakness, fainting, or pinpoint pupils.
Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
- fast or pounding heartbeats;
- a very slow heart rate (fewer than 60 beats per minute);
- feeling short of breath, even with mild exertion;
- swelling, rapid weight gain;
- confusion, hallucinations;
- fever, pale skin;
- urinating less than usual or not at all; or
- feeling like you might pass out.
Less serious side effects may include:
- feeling dizzy, drowsy, tired, or nervous;
- dry mouth;
- dry or burning eyes, blurred vision;
- headache, muscle or joint pain;
- nausea, vomiting, constipation, loss of appetite;
- sleep problems (insomnia);
- urinating more at night;
- mild skin rash or itching; or
- decreased sex drive, impotence.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Before taking clonidine, tell your doctor if you regularly use other medicines that make you sleepy (such as cold or allergy medicine, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety). They can add to sleepiness caused by clonidine.
Tell your doctor about all other medications you use, especially:
- clonidine transdermal skin patches (Catapres TTS);
- digitalis (digoxin, Lanoxin, Lanoxicaps);
- an antidepressant such as amitriptyline (Elavil, Etrafon);
- a beta-blocker such as atenolol (Tenormin), carvedilol (Coreg), labetalol (Normodyne, Trandate), metoprolol (Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal, InnoPran), sotalol (Betapace), and others;
- a calcium channel blocker such as amlodipine (Norvasc), diltiazem (Tiazac, Cartia, Cardizem), felodipine (Plendil), nifedipine (Procardia, Adalat), verapamil (Calan, Covera, Isoptin, Verelan), and others; or
- any other drugs to treat high blood pressure or heart problems.
This list is not complete and there may be other drugs that can interact with 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.
Catapres, Catapres-TTS-1, Catapres-TTS-2, Catapres-TTS-3, Duraclon, and clonidine
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Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04