Cetanil O Tablet 10s belongs to the class of antihypertensives, which are primarily used to treat hypertension (high blood pressure). Cilnidipine (calcium channel blocker) and olmesartan are included (angiotensin-II receptor antagonists). Hypertension is a long-term or chronic condition in which the blood's force against the artery walls becomes so great that it causes heart disease.Disclaimer:For More Information Contact Your Physician