A nurse is caring for a client who has been prescribed sulfasalazine to treat ulcerative colitis. Which of the following actions should the nurse take?

Brief Introduction: Ulcerative colitis involves diffuse mucosal inflammation limited to the colon and rectum, presenting with bloody diarrhea and tenesmus. Sulfasalazine acts as a prodrug, metabolized by colonic bacteria into 5-aminosalicylic acid and sulfapyridine to inhibit prostaglandin synthesis and reduce intestinal tissue damage. Rationale: A. Remaining upright is a standard intervention for gastroesophageal reflux, but it does not mitigate the systemic side effects of sulfasalazine. If the client experiences nausea or vomiting, the nurse should suggest taking the medication with enteric coatings or during meals to reduce direct gastric irritation. B. Administering sulfasalazine on an empty stomach increases the risk of gastric distress and dyspepsia. To enhance tolerance and minimize adverse GI effects, the dose should be taken after meals or with a full glass of water to facilitate proper transit to the large intestine. C. Sulfasalazine causes photosensitivity, making the skin highly susceptible to severe ultraviolet radiation burns. The nurse must instruct the client to apply broad-spectrum sunscreen and wear protective clothing to prevent drug-induced dermatitis or solar erythema during therapy. D. Limiting fluids is contraindicated as sulfasalazine and its metabolites can precipitate in the kidneys, leading to crystalluria and potential renal calculi. Clients should maintain an intake of at least 2000 mL daily to ensure adequate renal perfusion and drug excretion.