For weekly alendronate therapy, which instruction best supports absorption and safety?

• A. Take on an empty stomach with a full glass of water.
• B. Take with breakfast to minimize nausea.
• C. Take with juice after meals.
• D. Take at bedtime with a snack.

Answer: (A)

Absorption and safety hinge on taking alendronate with nothing in the stomach and with plenty of water. This medication has very limited oral absorption, and food or minerals can bind the drug or slow its movement through the stomach, drastically reducing how much actually gets into the bloodstream. A full glass of plain water helps the pill reach the stomach quickly so it can begin its action effectively. After taking it, staying upright for at least 30 minutes protects the esophagus from irritation or ulcers, a known risk with bisphosphonates. Because meals, beverages like juice, or bedtime snacks introduce food or timing that can interfere with absorption or increase reflux risk, the instruction to take it on an empty stomach with a full glass of water best supports both absorption and safety.