What are the differences between type 1 and type 2 sustained-release nifedipine tablets?

The main differences between Nifedipine Sustained-Release Tablets Type 1 and Type 2 are reflected in the drug strength and possible drug release rate. Specifically: 1. **Drug Strength**: Each tablet of Nifedipine Sustained-Release Tablets Type 1 contains 10 mg of nifedipine, whereas each tablet of Nifedipine Sustained-Release Tablets Type 2 contains 20 mg of nifedipine. This means that, at the same dosage, patients taking Type 2 tablets receive twice the amount of medication compared to those taking Type 1 tablets. 2. **Drug Release Rate**: Although the main ingredients are the same, the manufacturing process of Nifedipine Sustained-Release Tablets Type 2 may be more advanced, allowing better control of the drug's release rate in the body, thus ensuring longer-lasting and more stable therapeutic effects. However, this difference may vary depending on the manufacturer and specific product. Additionally, both medications are calcium channel antagonists with essentially the same indications, adverse reactions, and precautions. They inhibit calcium ion channels in the myocardium and vascular smooth muscle, thereby exerting a blood pressure-lowering effect. When using these medications, patients should select the appropriate drug strength and dosage based on their individual condition and physician's advice, and follow the correct administration method.