Which statement by an adolescent prescribed phenytoin indicates a need for further teaching regarding the medication?

The statement indicating a need for further teaching is the one about stopping the medication if the gums become sore and swollen. Phenytoin, an anticonvulsant, is known to cause gingival hyperplasia, which can lead to swollen and sensitive gums. However, it is important for patients to understand that they should not discontinue phenytoin on their own without consulting their healthcare provider. Stopping the medication abruptly can lead to seizures or other complications. Instead, if an individual experiences gum issues while on phenytoin, they should contact their healthcare provider for advice on how to manage these side effects, rather than immediately stopping the medication.

The other statements reflect accurate and important information related to the use of phenytoin. Regular blood level checks are necessary to monitor the drug's efficacy and avoid toxicity. Avoiding alcohol is critical since it can interact with phenytoin and increase the risk of side effects or decrease seizure control. Taking the medication with or without food is typically appropriate, allowing for flexibility in the adolescent's routine.