<s>[INST] I am taking 20 ml of geodon. It was working pretty good but For the past three weeks I ve been having this weird sensation in my head. The only way I can describe it is that it s like an electrical current that comes and goes in my head. Such an odd feeling. I remember having this feeling when I was beginning to take Prozac many years ago. I guess my question is, is this sensation normal? I can deal with it if I know it is a normal side effect. Thank you [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. GEODON has many side effects.  The answer to whether it is from the medication is to analyze the timing between WHEN exactly your funny feeling in the head seems to come on, how long it lasts, and WHEN exactly was the last dose of GEODON. If Geodon was taken anywhere within 1-2 hrs. of when you get the feelings in your head. And this is happening consistently to the point of being able to document when you take your medication and when you get the zaps in your head. Then, that's your answer.  If there are no firm time correlations then, the feeling you're having may not have anything to do with the medication itself.  The other way to figure this out is to read the long list of side effects that the pharmacist gave you when you first had the medication prescribed. Hope I have answered your query. Let me know if I can assist you further. </s>