Exhibits The nurse has reviewed information regarding the adolescent's medication for home use with the guardian and adolescent. Select the 2 statements that demonstrate the guardian's understanding of their child's medication.

A. "There is nothing we can do to minimize overgrowth of their gum tissue.": Incorrect. Gingival hyperplasia is a known side effect of phenytoin, but good oral hygiene and regular dental care can help minimize its severity. B. "They will need to take 400 IU of vitamin E while on this medication.": Incorrect. Routine vitamin E supplementation is not standard or necessary with phenytoin unless specifically indicated by a provider. C. "We will need to periodically have their blood drawn to check phenytoin levels.": Correct. Phenytoin has a narrow therapeutic index, so serum drug levels must be monitored regularly to avoid toxicity or subtherapeutic dosing. D. "This medication may cause their eyes to, at times, move quickly back and forth.": Correct. Nystagmus is a known dose-related side effect of phenytoin, especially at higher levels. E. "This drug won't decrease the effectiveness of their oral contraceptive medication.": Incorrect. Phenytoin is a hepatic enzyme inducer and can reduce the effectiveness of hormonal contraceptives, so alternate or additional contraceptive methods should be recommended.