A 54-year-old woman on alendronic acid 70 mg weekly reports nausea if taken on an empty stomach. What is the most appropriate advice?

• A. Take the tablet with plenty of water while sitting or standing, on an empty stomach at least 30 minutes before breakfast
• B. Take the tablet with milk after breakfast
• C. Take the tablet with orange juice at breakfast
• D. Take the tablet just before bedtime

Answer: (A)

Bisphosphonates like alendronic acid irritate the esophagus and are best absorbed when taken first thing in the morning with a full glass of water, while the patient is upright and at least 30 minutes before any food or other drinks. This upright posture helps prevent reflux and esophageal irritation, and using plain water avoids interactions that can reduce absorption. Taking the tablet with milk, juice, or other meals can lower absorption and may worsen GI symptoms, while taking it at bedtime increases the risk of reflux during the night. In this scenario, the most appropriate advice is to take the tablet with plenty of water while sitting or standing on an empty stomach at least 30 minutes before breakfast. After taking it, remain upright for at least 30 minutes.