Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Ziac (bisoprolol/hydrochlorothiazide) and Hyzaar (losartan/hydrochlorothiazide) are both combination medications used to treat high blood pressure, but they work in different ways. Ziac combines a beta blocker (bisoprolol) and a diuretic (hydrochlorothiazide), while Hyzaar combines an angiotensin II receptor blocker (ARB) (losartan) and a diuretic (hydrochlorothiazide). Ziac is typically not a first-choice medication for high blood pressure, whereas both components of Hyzaar are considered first-choice options. Ziac can cause dizziness and tiredness, and it’s important not to stop it suddenly due to the risk of serious heart problems. Hyzaar can also cause dizziness and may lead to high potassium levels, which can be serious. Both medications are taken once daily and can make you urinate more often. However, Hyzaar is specifically noted for its benefits in protecting the kidneys, especially in people with diabetes or mild-to-moderate kidney disease. Neither medication is recommended during pregnancy due to potential risks to the unborn baby.
Ziac, the brand name for bisoprolol/hydrochlorothiazide or bisoprolol/HCTZ, is a combination medication. It's used to treat high blood pressure in adults. It contains two classes of medications: a beta blocker (bisoprolol) and a diuretic (hydrochlorothiazide). It comes as a tablet that's taken by mouth once a day. Some side effects include dizziness and tiredness.
Summary for ARB / Diuretic (water pill) combo
Prescription only
Hyzaar (losartan / hydrochlorothiazide) is a combination medication that contains two first-choice options for lowering blood pressure. This medication is taken by mouth once daily. Like other blood pressure medications, Hyzaar (losartan / hydrochlorothiazide) can cause you to feel dizzy, especially when you first start this medication or when your provider raises your dose.