Nifedipine commonly used dosage forms are tablets and controlled release tablets, different dosage forms have different usage, such as nifedipine controlled release tablets the best time to take is 1 hour before breakfast every day. Nifedipine is a calcium antagonist, which is mainly used in the treatment of hypertension and coronary heart disease. The recommended usage of Nifedipine Controlled-Release Tablets is once a day, and it is recommended to take it about 1 hour before breakfast daily to avoid omission. Nifedipine tablets need to be taken 3 times a day, and it is recommended to be best taken about half an hour before meals. Adverse effects of nifedipine include edema, headache, etc. Nifedipine is contraindicated for those who are allergic to nifedipine and patients with cardiogenic shock. The above is only part of the dosage of Nifedipine. It is recommended to choose a reasonable dosage regimen according to the condition and dosage form of the drug under the guidance of a doctor, and should not use the drug blindly.