I've been on Geodon for about 3-4 weeks and about 3-4 days ago I doubled my dosage to 80mg just once at night. I'm going to be 16 in two days. Last night my heart started racing and beating hard. Today, my heart's fine I'm just extremely shaky and almost nervous feeling. I'm staying off this stupid pill but I will be okay right? Is this withdrawal or just a nasty side effect?