Final answer:
The nurse should include instructions to avoid caffeinated beverages, take the medication with meals, restrict milk products, and limit sodium intake.
Step-by-step explanation:
To provide general instructions to a client taking theophylline medication, the nurse should include the following:
- Avoid caffeinated beverages: Caffeine can interact with theophylline and increase its side effects.
- Take the medication with meals: Taking theophylline with food can help reduce stomach upset.
- Restrict milk products: Milk and dairy products can decrease the effectiveness of theophylline medication.
- Limit sodium intake: High sodium intake can lead to fluid retention, which may interact with theophylline.