Telmisartan 80 mg + amlodipine 5 mg is not yet maximal two-drug therapy, and this is not resistant hypertension yet.
A clinician would usually consider one of these next steps after confirming consistently high home BP:
-
Increase amlodipine from 5 mg to 10 mg once daily
- Useful if there is no troublesome ankle swelling, flushing, or dizziness.
-
Add a thiazide-like diuretic, often preferred if BP remains clearly above target
- Typical options: indapamide SR 1.5 mg once daily or chlorthalidone 12.5 mg once daily.
- This creates the standard three-class regimen:
ARB (telmisartan) + CCB (amlodipine) + thiazide-like diuretic.
Before adding a diuretic, the prescriber should check:
- Serum creatinine/eGFR
- Sodium and potassium
- History of gout, low sodium, dehydration, or recurrent falls
- Diabetes and other medicines, especially NSAID painkillers
Repeat renal function and electrolytes about 1 to 2 weeks after starting or increasing a diuretic, particularly at age 65 or with kidney disease.
Do not add an ACE inhibitor such as ramipril/enalapril to telmisartan. ACE inhibitor plus ARB increases kidney injury and hyperkalemia risk without routine benefit.
If BP remains high despite tolerated doses of telmisartan + amlodipine + a thiazide-like diuretic, then evaluate adherence, correct home BP technique, white-coat hypertension, high salt intake, NSAIDs/decongestants/steroids, kidney disease, sleep apnea, and other secondary causes. Only then is it considered resistant hypertension; low-dose spironolactone is commonly the next option, but requires close potassium and kidney-function monitoring.
A beta-blocker is generally not the routine next drug unless there is a reason such as angina, prior MI, atrial fibrillation, fast pulse, or heart failure.
Seek urgent care if BP is ≥180/120 mmHg and there is chest pain, breathlessness, weakness/numbness, confusion, severe headache, vision change, or reduced urine output.
Comprehensive Clinical Nephrology, 7th ed., p. 531-534: preferred escalation is RAS blocker + CCB + thiazide/thiazide-like diuretic; resistant hypertension is failure of this three-drug regimen at tolerated doses. Current
2024 ESC guideline summary also supports spironolactone only after uncontrolled triple therapy.