The nurse determines that the client understands an important principle in self-administration of nifedipine (Procardia) when the client makes which of the following statements? 1. The use of antacids...

The nurse determines that the client understands an important principle in self-administration of nifedipine (Procardia) when the client makes which of the following statements?

1. The use of antacids when taking the medication will enhance absorption.

2. Grapefruit juice may enhance the absorption of nifedipine.

3. If I miss a dose, I should take two nifedipine capsules when I remember.

4. This drug will make my birth control pills ineffective.