TLS-40 Telmisartan Tablets IP 40mg are primarily used to treat high blood pressure (hypertension) and to reduce the risk of serious heart issues like heart attacks and strokes. The active medicine in this tablet is Telmisartan (40mg), which belongs to a family of drugs called Angiotensin II Receptor Blockers (ARBs). It is a long-acting medicine that usually helps control blood pressure for a full 24 hours with a single daily dose.