Telmisartan — Angiotensin II receptor blocker (ARB). Study the mechanism, listed uses and warnings from the US label on one sourced card.
Generic name
Telmisartan
Class
Angiotensin II receptor blocker (ARB)
Mechanism
Blocks angiotensin II at the AT1 receptor, reducing vasoconstriction and aldosterone release.
Used for
Hypertension in adults; Reduction of myocardial infarction, stroke or cardiovascular death risk in adults aged 55 years and older at high cardiovascular risk who cannot take ACE inhibitors
Common side effects
Back pain; Sinusitis; Diarrhea
Boxed warning
Fetal toxicity: discontinue as soon as pregnancy is detected.
Warnings
Hypotension; Hepatic or renal impairment; Avoid combining ACE inhibitor with ARB
Interactions
Aliskiren; Digoxin; Ramipril
Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.
Label date: 20260811 · For learning, not clinical decisions. US label and brand information; always consult the current source.
Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.
Mechanism: Losartan and its active metabolite block the vasoconstrictor and aldosterone-secreting effects of angiotensin II at its receptor.
On both cards: Common side effects — Back pain
Only on the Losartan card: Used for — Hypertension in adults and children aged 6 years and older; Stroke-risk reduction in hypertension with left ventricular hypertrophy; the label reports that this benefit did not apply to Black patients; Diabetic nephropathy with elevated serum creatinine and proteinuria in type 2 diabetes with a history of hypertension · Common side effects — Dizziness; Upper respiratory infection; Nasal congestion · Warnings — Hypotension in volume-depleted patients; Renal function changes; Hyperkalemia · Interactions — Potassium-raising agents; Lithium; NSAIDs
Mechanism: Losartan selectively blocks angiotensin II binding at AT1 receptors; hydrochlorothiazide increases renal sodium and chloride excretion.
On both cards: Common side effects — Back pain
Only on the Losartan / Hydrochlorothiazide card: Used for — Hypertension; this fixed-dose combination is not initial therapy except in selected severe cases where prompt control outweighs combination-initiation risk; Stroke-risk reduction in hypertension with left ventricular hypertrophy; the label reports evidence that this specific benefit does not apply to Black patients · Common side effects — Dizziness; Upper respiratory infection; Cough · Warnings — Hypotension in volume-depleted patients; Renal function and electrolyte changes; Acute angle-closure glaucoma · Interactions — Potassium-raising agents; Lithium; NSAIDs
Mechanism: Selectively blocks angiotensin II binding to AT1 receptors, inhibiting its vasoconstrictor and aldosterone-secreting effects.
On both cards: Warnings — Hypotension
Only on the Valsartan card: Used for — Hypertension in adults and children aged 6 years and older; Reduction of heart-failure hospitalization in adults with NYHA class II–IV heart failure; Reduction of cardiovascular mortality in clinically stable adults with left ventricular failure or dysfunction after myocardial infarction · Common side effects — Headache; Dizziness; Fatigue; Hypotension; Hyperkalemia · Warnings — Renal function and potassium changes; No aliskiren in diabetes · Interactions — Potassium-sparing diuretics / supplements; NSAIDs; Lithium
An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.
Losartan: Drugs acting on the renin-angiotensin system can cause fetal injury and death; discontinue when pregnancy is detected.
Losartan / Hydrochlorothiazide: Fetal toxicity: drugs acting on the renin-angiotensin system can injure or kill the developing fetus; stop when pregnancy is detected.
Valsartan: Fetal toxicity: drugs acting on the renin-angiotensin system can injure or kill the developing fetus; stop when pregnancy is detected.
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