Towards the end of the year, people’s work pressure is greater, and colds often occur. Many people have a cold, always think of going to the pharmacy to buy some cold medicine to eat, and even many people will buy several cold medicine, try this, try that, or cure eager to eat several cold medicine together. For people with high blood pressure, they often do not rest well after catching a cold, which leads to unstable blood pressure. This kind of people after the cold, taking some antipyretic and analgesic drugs may affect and lower the effect of blood pressure drugs, this point need to pay extra attention. At the same time, people in poor health when they have a cold, if the blood pressure is not well controlled at this time, more likely to induce brain infarction and cerebral hemorrhage and other accidents. Hypertension patients should not be careless in taking cold medicine, “drug compatibility” is the truth that everyone knows, different cold medicine ingredients are also different, especially some components of cold medicine and antihypertensive drugs in some components, so not only will not cure the cold, but also lead to an increase in blood pressure, therefore, hypertension patients should not be careless in taking cold medicine. How should hypertensive patients choose cold medicine? Hypertension patients in the purchase of cold medicine, in addition to pay attention to its composition, but also need to pay attention to their blood pressure, according to their blood pressure level to choose the right cold medicine, not arbitrarily take. The main ingredients of cold medicine are acetaminophen (antipyretic and analgesic), pseudoephedrine hydrochloride (reduces nasal mucosal congestion), dextromethorphan hydrobromide (cough suppressant), amantadine (antiviral), chlorpheniramine maleate (antihistamine), etc. In addition to the difference in the effectiveness of various cold medicines, there are also their own side effects. Among them, cold medicines containing pseudoephedrine hydrochloride have the effect of reducing nasal mucosal congestion, which can shrink the capillaries of the upper respiratory tract, reduce mucosal congestion in the nasopharynx and eliminate nasal congestion symptoms. However, at the same time, pseudoephedrine hydrochloride can also increase blood pressure, and the effect of elevated blood pressure is long-lasting, coupled with the promotion of rapid heartbeat and other adverse effects, can aggravate the condition of patients with hypertension, and even bring life-threatening. Patients with mildly elevated or well-controlled blood pressure and normal heart function can take cold medicine containing a small amount of pseudoephedrine hydrochloride for a short period of time after they have symptoms of nasal congestion when they have a cold, because it has relatively little effect on primary hypertension with stable blood pressure. In the case of patients with moderately or severely elevated blood pressure or poorly controlled blood pressure, the types containing pseudoephedrine hydrochloride should be avoided as much as possible when choosing cold medication. For such patients, nasal drops of pseudoephedrine hydrochloride can be used in appropriate amounts when nasal congestion is severe. Because of the topical use of pseudoephedrine hydrochloride, the effect on blood pressure is much smaller compared to the oral. You can also use the pounded juice of white onion, add saline to make 40% liquid nasal drops, 3-4 times a day.