A nurse is caring for a client with a new prescription for alendronate (Fosamax). Which of the following symptoms indicate a possible complication of this medication?

A. Inflammation on the calf is not a common complication of alendronate. B. Drowsiness is not typically associated with alendronate. C. Dysphagia (difficulty swallowing) can be a sign of esophageal irritation or ulceration, which are known complications of alendronate. Clients should be instructed to take the medication with a full glass of water and remain upright for at least 30 minutes after administration. D. Nausea is a common side effect, but dysphagia is a more serious concern that requires attention.