Losartan, (losartan potassium) — Uses, Dosage, Side Effects & Safety
Drug class: Cardio-Metabolic
Overview
Losartan is a prescription medication used to treat high blood pressure (hypertension), help protect the kidneys in people with type 2 diabetes and proteinuria, and reduce the risk of stroke in certain patients. It belongs to a class of drugs called angiotensin II receptor blockers (ARBs), which help relax blood vessels so blood can flow more easily. By lowering blood pressure, losartan helps reduce the risk of serious complications such as heart attack, stroke, and kidney problems. It may be used alone or in combination with other blood pressure medications. Key points for patients: Take losartan exactly as prescribed, even if you feel well, as high blood pressure often has no symptoms. Do not stop taking losartan without consulting your healthcare provider.
Therapeutic uses
- Hypertension
- Diabetic nephropathy
- Heart failure
- Stroke risk reduction in patients with hypertension and left ventricular hypertrophy
Common side effects
- Dizziness
- Fatigue
- Hypotension
- Hyperkalemia
- Angioedema
- Renal impairment
- Cough
Frequently Asked Questions about Losartan,
How long does it take for losartan to lower blood pressure?
Most people begin to see a reduction in blood pressure within 1 week, with the full effect typically seen in 3–6 weeks.
Can I take losartan if I am pregnant or breastfeeding?
Losartan should not be used during pregnancy, especially in the second and third trimesters, due to risk of harm to the unborn baby. Consult your doctor if you are breastfeeding.
What should I do if I experience dizziness while taking losartan?
Dizziness is a common side effect, especially when starting treatment. Stand up slowly from sitting or lying positions. If dizziness persists or worsens, contact your healthcare provider.
Can losartan be taken with other blood pressure medications?
Yes, losartan is often combined with other antihypertensive agents, such as diuretics or calcium channel blockers, for better blood pressure control. Always follow your doctor's instructions.
Does losartan affect potassium levels?
Yes, losartan can increase potassium levels in the blood. Your doctor may monitor your potassium and advise you to avoid potassium-rich foods or supplements.
Is losartan safe for people with kidney disease?
Losartan is often used to protect the kidneys in people with diabetes and proteinuria, but dose adjustments may be needed in patients with kidney impairment. Regular monitoring is important.
What foods or drinks should I avoid while taking losartan?
Avoid salt substitutes containing potassium and limit high-potassium foods. Alcohol should be limited as it can increase side effects.
What is losartan used for?
Losartan is primarily used to treat high blood pressure (hypertension) and to protect the kidneys in people with type 2 diabetes who have protein in their urine. It's also prescribed to reduce the risk of stroke in patients with high blood pressure and an enlarged heart, and to treat heart failure when ACE inhibitors are not tolerated.
Related Losartan, information
Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.