Byxin Tong is a nifedipine controlled-release tablet, you should not break the tablets and take half tablets. The instruction manual of Byxin Tong clearly states that Byxin Tong is usually a whole tablet, which needs to be swallowed with a small amount of liquid, and the time of taking the pill is not limited by the meal time, but do not bite, chew or break the tablet. After the active ingredient is absorbed, the empty tablet will be excreted intact through the gastrointestinal tract. Byxin Tong has adopted a special pharmaceutical process to release nifedipine at a near-constant rate within 24 hours so that the drug is released at a zero-level rate, independent of gastrointestinal peristalsis and pH. Breaking the tablet will disrupt the controlled release system and prevent the slow and sustained release of the drug in the body, which will seriously affect the efficacy of the drug. It should be noted that Bexinom is a prescription drug and must be used under the guidance of a doctor. If you are using other drugs, please inform your doctor during your visit.