Nicardia Retard 20 Tablet SR is a medication for treatment of high blood pressure and to prevent chest pain (angina). It contains nifedipine which relaxes blood vessels, thus lowering blood pressure and improving blood flow. It also reduces the heart's workload, helps the heart muscles relax, and improves oxygen delivery to the heart, preventing chest pain.

Adverse effects of this drug includes redness of the face, swelling in the arms and legs, dizziness, and headache. Follow your doctor's instructions for the dose and duration of this medicine. You can take it with or without food. Check your blood pressure regularly to ensure the medication is effective. Swallow it whole without chewing, crushing, or breaking it.

Patients prescribed it should adhere to their doctor's recommendations regarding dosage and duration of treatment.

It is crucial to report any persistent symptoms or adverse effects promptly.