If it is dilantin, an anti-convulsive, MEBARAL (mephobarbital) may also be used with phenytoin sodium (Dilantin); in some cases, combined therapy appears to give better results than either agent used alone, since phenytoin sodium is particularly effective for the psychomotor types of seizure but relatively ineffective for petit mal.
https://www.bing.com/search?q=mebaral%20with%20dilantin&qs=n&form=QBRE&sp=-1&pq=mebaral%20with%20dilantin&sc=0-21&sk=&cvid=6248C55AED9B4B72ABC67F66992D3337
I think I posted too soon, but thanks for the good info!