Clonidine (Systemic).

Some commonly used brand names are:

In the U.S. --

 
   Catapres 
   Catapres-TTS 

 
   Generic name product may also be available. 

In Canada --

 
   Catapres 
   Dixarit 

Description Clonidine (KLOE-ni-deen) belongs to the general class of medicines called antihypertensives. It is used to treat high blood pressure (hypertension).

High blood pressure adds to the work load of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, or kidney failure. Hypertension may also increase the risk of heart attacks. These problems may be less likely to occur if blood pressure is controlled.

Clonidine works by controlling nerve impulses along certain nerve pathways. As a result, it relaxes blood vessels so that blood passes through them more easily. This helps to lower blood pressure.

Clonidine may also be used for other conditions as determined by your doctor.

Clonidine is available only with your doctor's prescription, in the following dosage forms:

 
   Oral 
      o Tablets (U.S. and Canada) 

 
   Transdermal 
      o Skin patch (U.S.) 

Before Using This Medicine In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For clonidine, the following should be considered:

Allergies -- Tell your doctor if you have ever had any unusual or allergic reaction to clonidine. Also tell your health care professional if you are allergic to any other substance, such as foods, preservatives, or dyes.

Pregnancy -- Clonidine has not been studied in pregnant women. However, studies in animals have shown that clonidine causes harmful effects in the fetus, but not birth defects.

Breast-feeding -- Although clonidine passes into breast milk, it has not been reported to cause problems in nursing babies.

Children -- Children may be more sensitive than adults to clonidine. Clonidine overdose has been reported when children accidentally took this medicine.

Older adults -- Dizziness or faintness may be more likely to occur …