There are some contraindications to felodipine extended-release tablets, including:
1. People who are allergic to felodipine or other calcium channel blockers: If you are allergic to felodipine or other calcium channel blockers, you should avoid using felodipine extended-release tablets.
2. Bradycardia (slow heart rate): Felodipine extended-release tablets may cause a decrease in heart rate, so it should not be used in the case of bradycardia.
3. Severe hypotension: Felodipine extended-release tablets can lower blood pressure, so it should not be used when blood pressure is already too low.
4. Heart failure: For patients who already have heart failure, felodipine extended-release tablets may aggravate heart failure symptoms, so they should be used with caution or avoided in patients with heart failure.
5. Chronic hepatic impairment: The metabolism and clearance of felodipine extended-release tablets in patients with impaired liver function may be affected. Therefore, in the case of chronic hepatic impairment, the dose should be reduced or avoided.
6. Pregnant and lactating women: The safety profile of felodipine extended-release tablets in pregnant and lactating women is unclear and should be used with caution or avoided in these populations.
In addition to the above contraindications, there are some relative contraindications, including severe heart valve stenosis, acute myocardial infarction, arrhythmias, etc. Before using felodipine extended-release tablets, you should consult your doctor, who will assess the risk of contraindications and relative contraindications based on your specific situation and develop a treatment plan that is right for you.