A client is prescribed trimethoprim-sulfamethoxazole for a urinary tract infection. Which of the following instructions would not be appropriate for this medication?

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Taking trimethoprim-sulfamethoxazole with an antacid may decrease the absorption of the medication, reducing its effectiveness. Therefore, it is not appropriate to take it with an antacid. It is important to complete the full course of the medication even if symptoms improve (A), drink plenty of water (B) to avoid dehydration and enhance the effectiveness of the medication, and take the medication with water on an empty stomach (C) to maximize absorption.

A Client Is Prescribed Trimethoprim-Sulfamethoxazole for a Urinary Tract Infection