Key takeaways
Sumatriptan (Imitrex) and phenytoin (Dilantin) are both prescription medications, but they treat different conditions. Sumatriptan is used to treat migraines in adults and works by tightening blood vessels in the brain to relieve pain. It is available as a lower-cost generic tablet. On the other hand, phenytoin is used to treat and prevent various types of seizures by decreasing abnormal signals between nerve cells in the brain. It is also available in a generic form. Sumatriptan is taken as needed for migraines, while phenytoin is taken regularly to maintain stable levels in the body. Sumatriptan can cause side effects like tingling and fatigue, whereas phenytoin can cause side effects such as dizziness, gum overgrowth, and changes in coordination. Additionally, phenytoin requires regular blood tests to monitor levels, while sumatriptan does not. Both medications have serious potential side effects and interactions, so it's important to discuss all your medications with your prescriber.
