Answer:
"I take cimetidine rather than omeprazole for heartburn'" (Ans D)
Explanation:
Theophylline can cause seizures and life-threatening arrhythmias depending upon a route of administration and dose due to its narrow therapeutic range (10-20 mcg/mL).
The dose can be adjusted based on peak drug levels, obtained 30 minutes after the dose is given. Clients who have oral theophylline should avoid medications such as cimetidine, ciprofloxacin that increase serum theophylline levels and caffeinated products.