An Comparative Pharmacokinetic Study of Amlodipine Besylate Controlled-release Tablets,China in Normal, Healthy, Adult, Human Subjects Under Fasting Conditions

Inclusion Criteria: Subjects fully understand the purpose, nature, method and possible adverse reactions of the trial, voluntarily serve as subjects, and sign an informed consent form before any research procedure. Healthy subjects over the age of 18 (including the age of 18) can be both male and female. Male weight ≥ 50.0 kg, female weight ≥ 45.0 kg; Body mass index (BMI) is in the range of 19.0~26.0 kg/m2 (including the critical value). From the signing of the informed consent form to the end of the study, there was no birth plan and voluntary adoption of appropriate and effective contraceptive measures, and there was no sperm or egg donation plan. Subjects who can communicate well with researchers and understand and comply with the requirements of this study Exclusion Criteria: Allergic constitution, or a history of food or drug allergy or other allergic diseases (asthma, urticaria, eczema dermatitis, etc.); Or allergic to any component of amlodipine besylate. Have a history of hypotension, or have a history of aortic stenosis or coronary artery occlusion. Those who have poor condition of blood vessel puncture, or can not tolerate vein puncture, or have a history of needle and blood sickness. There are cardiovascular, blood, liver, kidney, endocrine, respiratory, digestive, nervous, mental, immune, skin and metabolic disorders and other system diseases that researchers think are clinically significant, or there is a chronic or serious history of these diseases; Or there is a history of surgery that may affect drug absorption and metabolism. Those with abnormal physical examination, vital sign examination, 12 lead ECG and laboratory examination, and those with clinical significance judged by the research doctor. Human immunodeficiency virus (HIV) antibody, or hepatitis B virus surface antigen (HBsAg), or hepatitis C virus (HCV) antibody, or Treponema pallidum antibody (Anti TP) test results are positive. Pregnant women, lactating women, or women of childbearing age have unprotected sexual behavior within 14 days before the planned administration, or the pregnancy test results are positive. Those vaccinated within 3 months before screening (except for COVID-19 vaccine), or those vaccinated with COVID-19 vaccine within 1 week before screening, or those who plan to vaccinate any vaccine during the trial or within 1 week after the end of the study; Or blood donation/blood loss ≥ 400 mL or blood transfusion or use of blood products within 3 months before screening, or blood donation (including blood components) planned during the test or within 3 months after the test. Previous medication: Those who have a history of drug abuse or are positive for drug screening and have used drugs 6 months before screening, including MDMA (ecstasy), methamphetamine (methamphetamine), ketamine, morphine, tetrahydrocannabinol acid (cannabis). Drugs that inhibit or induce liver metabolism of drugs (such as inducers: barbiturates, carbamazepine, phenytoin, glucocorticoids, omeprazole; inhibitors - SSRI antidepressants, cimetidine, diltiazem, macrolides, nitroimidazoles, sedatives and hypnotics, verapamil, fluoroquinolones, antihistamines, etc.) were used within 30 days before the first administration; Or 14 days before administration, any other drugs including prescription drugs, over-the-counter drugs, functional vitamins, health products or Chinese herbal medicine were used. Eating, smoking and drinking: People with dysphagia, or those who have special requirements for diet and cannot accept a unified diet. Those who used to drink too much caffeinated food or drink (such as coffee, strong tea, cola, chocolate, etc.) for a long time (more than 8 cups a day, 1 cup=250 mL), or take caffeinated food or drink within 72 hours before taking the drug for the first time, or can not be interrupted during the test. Food rich in purine (such as anchovies, sardine, cow liver, cow kidney, etc.), or grapefruit products are eaten within 48 hours before administration, or cannot be interrupted during the test. Those who have started significantly abnormal diet (such as diet and low sodium) within 4 weeks before screening. Excessive smoking within 6 months before screening (average ≥ 5 cigarettes/day) or smoking within 48 hours before the first drug administration, or unable to stop using any tobacco products during the test period. People who have a history of alcoholism or regularly drank alcohol within 6 months before screening, that is, people who drink more than 14 units of alcohol every week (1 unit=360 mL of beer with an alcohol content of 5%, 45 mL of spirits with an alcohol content of 40%, or 150 mL of wine with an alcohol content of 12%), or people who drink or eat food or drink containing alcohol within 48 hours before taking drugs for the first time, or people who have positive alcohol breath test on the day of their first stay, or who cannot stop drinking alcohol during the study period. other: Those who have participated in or are participating in clinical trials of other drugs within 3 months before screening (defined as those who have used clinical research drugs). Subjects who are judged by the investigator to be unsuitable for other factors in this clinical study.