Template:Phenytoin toxicity level chart

Toxicity symptoms by phenytoin level^

Level Sypmtoms
>10 Usually no symptoms
10-20 Occasional mild nystagmus
20-30 Nystagmus
30-40 Ataxia, slurred speech, Nausea/vomiting
40-50 Lethargy, confusion
>50 Coma, seizure (rare)

^Provides a rough guide only; neither sensitive nor specific