Before you begin treatment with Catapres, inform your doctor of the following:, All the medications you take, Your allergies, Your health conditions and past medical history, If you are pregnant or breastfeeding, Do not stop taking Catapres until your doctor tells you to do so, as stopping Catapres abruptly can cause unpleasant symptoms such as nervousness, agitation, headache, tremor, and increased blood pressure., If you are sensitive or allergic to Catapres patches, you may also develop an allergic reaction to Catapres tablets., Tell your doctor if you will be undergoing surgery., Do not drive or participate in other hazardous activities until you know how Catapres affects you., Alcohol and other sedating medications can increase the sedative effects of Catapres., Catapres can cause dry eyes., Catapres should be used with caution if you have severe coronary insufficiency, conduction issues, cerebrovascular disease, chronic kidney failure, or if you had a recent heart attack. All the medications you take, Your allergies, Your health conditions and past medical history, If you are pregnant or breastfeeding