Your Side Effects May IncludeDilantin side effects
phenytoin
This side effect is printed on the FDA label for Dilantin. It was a question in our daily quiz, where you pick the real side effect from four choices.
Gums that grow over your teeth
Brushing and flossing help keep it in check, the label says.
From the FDA label
“Advise patients of the importance of good dental hygiene in order to minimize the development of gingival hyperplasia and its complications.”
Dilantin label, updated May 12, 2026 ·
Read the full label on DailyMed
What to watch for
See your dentist regularly. Call your doctor about any rash, which can signal a serious reaction.
181 reports to the FDA's adverse event system mention gum overgrowth. A report is not proof the drug caused it. See the query
From quiz No. 8 · October 2, 2026 · Play that quiz →
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Not medical advice. Don't stop or start a medication because of a quiz. Talk to your doctor or pharmacist. Label text and report counts from openFDA. Not affiliated with any drug maker.