A patient has been prescribed nifedipine (Adalat CC) as treatment for hypertension. The nurse would evaluate medication instruction as effective if the patient makes which statements?

Question

1. "If I drink alcohol while taking this medication, I will get very sick to my stomach."
2. "I should stop taking my melatonin sleep medication."
3. "I should no longer drink grapefruit juice."
4. "I should no longer drink sports drinks with caffeine in them."
5. "I should stop taking my vitamin C supplement."

Answer 1

2,3
Rationale 1: Alcohol may potentiate the effects of nifedipine (Adalat CC), but this combination does not cause gastric irritation.
Rationale 2: Concurrent use with melatonin may increase blood pressure and heart rate.
Rationale 3: Grapefruit juice may enhance absorption of nifedipine (Adalat CC).
Rationale 4: Caffeine is not contraindicated when taking nifedipine (Adalat CC).
Rationale 5: Vitamin C supplements are not contraindicated when taking nifedipine (Adalat CC).

Global Rationale: Concurrent use with melatonin may increase blood pressure and heart rate. Grapefruit juice may enhance absorption of nifedipine (Adalat CC). Alcohol may potentiate the effects of nifedipine (Adalat CC), but this combination does not cause gastric irritation. Caffeine and vitamin C supplements are not contraindicated when taking nifedipine (Adalat CC).