Skip to main content
Drug bottle and Pill

Compare Zetia vs. Niaspan

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Ezetimibe (Zetia) and Niacin ER (Niacor, Slo-Niacin) are both used to manage high cholesterol, but they work differently and have distinct characteristics. Ezetimibe is a cholesterol absorption inhibitor that lowers "bad" cholesterol (LDL) by reducing its absorption in the gut. It is typically taken once daily and can be used alone or with statins. Niacin ER, a form of vitamin B3, works by blocking fat release from tissues and slowing cholesterol production in the liver. It also helps raise "good" cholesterol (HDL) and lower triglycerides. Niacin ER is taken once daily at bedtime, while ezetimibe is taken once daily at any timeorning. Ezetimibe generally has fewer side effects, while Niacin ER commonly causes flushing and stomach upset. Both medications are available as lower-cost generics, and neither is recommended during pregnancy or breastfeeding. Ezetimibe is not a first-choice medication and is often added to statins. Niacin ER also isn't a first-choice medication, and is used when statins are not effective or cause side effects.

Browse medications

View All

Research prescriptions and over-the-counter medications from A to Z, compare drug prices, and start saving.