Baixin Tong, also known as nifedipine controlled-release tablets, is priced at around $15-33 for a 7-capsule pack, with prices varying slightly, mainly according to different regions, dealers and other specifics. Nifedipine controlled-release tablets belong to calcium ion blockers, the main ingredient is nifedipine, is a hard rose-red tablets, mainly for hypertension, coronary heart disease and chronic stable angina pectoris treatment, usually taken before meals. Due to different regions, different manufacturers, different drug offers in each region, so the price is not fixed, specifically according to the local hospital to buy. Common adverse reactions include headache, edema, constipation, anemia and so on. Allergic to nifedipine is contraindicated, contraindicated in cardiogenic shock, contraindicated in pregnant and lactating women, barium meal to do contrast examination, nifedipine can cause false positives, patients with hepatic insufficiency should pay attention to the dosage. If you feel unwell during the use of nifedipine controlled-release tablets, you should stop taking the medicine immediately and go to the hospital for medical treatment under the guidance of the doctor.