Hi,
You mentioned that your friend took japoz 0.25mg tablet, but you didn't mention the number of tablets.If it's one or two tablets, that's ok.He will get excess sleep for a day.
If it's more, then u need to take him to hospital.
He needs to be evaluated in detail if this is overdose and the reasons for his overdosage
Health Tips
If it is a suicidal attempt, keep a watch on him