The nurse has given medication instructions to a patient receiving phenytoin. Which statement by the patient indicates that the patient has an adequate understanding of the instructions?

The correct answer is A: "I will need to take extra care of my teeth and gums while on this medication." This indicates an understanding of the medication's side effects, as phenytoin can cause gum overgrowth. It shows awareness of the importance of dental hygiene while on the drug. Choice B is incorrect because stopping the medication abruptly can lead to seizure recurrence. Choice C is incorrect as alcohol can interact with phenytoin and affect its efficacy. Choice D is incorrect because skipping doses can lead to suboptimal seizure control.