ARB Dosing Made Simple: What You Need to Know

Angiotensin‑II receptor blockers (ARBs) are a go‑to class for high blood pressure, heart failure, and kidney protection. If you’ve been prescribed an ARB, the biggest question is usually “how much should I take?” This guide breaks down the most common ARBs, their usual dose ranges, and practical tips to keep you safe and effective.

Why ARB Dosing Matters

Getting the dose right can mean the difference between steady blood pressure control and unwanted side effects. Too low, and you might not see the pressure drop you need; too high, and you could feel dizzy, get kidney issues, or notice a spike in potassium. Most doctors start you on a low or moderate dose and adjust based on how you feel and what your lab results show.

Another thing to watch is timing. Some ARBs are taken once a day, others twice. Consistency helps keep the blood‑pressure‑lowering effect steady throughout the day. If you miss a dose, don’t double‑up—just take the next one at your regular time.

Typical Dosage Ranges for Popular ARBs

Losartan (Cozaar): Start at 50 mg once daily. Most adults end up on 50‑100 mg daily, and a few need 100 mg twice a day for tougher cases.

Valsartan (Diovan): Usually begins at 80 mg once daily. Many patients stay at 160 mg daily, but doses can go up to 320 mg a day split into two doses.

Irbesartan (Avapro): Typical starting dose is 150 mg once daily. Common maintenance is 150‑300 mg daily, sometimes split if you have kidney concerns.

Olmesartan (Benicar): Often prescribed at 20 mg once daily. Some doctors increase to 40 mg if blood pressure isn’t controlled.

Candesartan (Atacand): Starts at 8 mg daily. The usual maintenance range is 8‑32 mg per day, taken as a single dose.

These numbers are averages; your doctor may adjust based on age, kidney function, and other meds you’re taking. Always follow the prescription label and keep an eye on any new symptoms.

Quick tip: Keep a small notebook or phone note with the exact dose, time, and any side effects you notice. Sharing this with your doctor at the next visit makes dose tweaks easier.

In summary, ARB dosing is straightforward once you know the typical ranges and why the dose matters. Stick to the prescribed amount, watch for dizziness or swelling, and talk to your healthcare provider if you think you need a change. With the right dose, ARBs can keep your blood pressure in check and protect your heart for years to come.