Many patients ask, “Amlodipine vs Telmisartan: which is better for high BP?” Telmisartan belongs to the Angiotensin Receptor Blocker (ARB) class. Amlodipine vs Telmisartan: Major Differences Feature Amlodipine Telmisartan Drug Class Calcium Channel Telmisartan is considered better for maintaining stable BP for 24 hours. In general, Telmisartan has fewer side effects.