In fewer cases, one can have a side effect of psychiatric medication but there is nothing to panic about.
The same doctor who prescribed you peroxitine go back to him and tell him about the side effects that your wife is getting. He will with make modifications in the existing one or give another medicine to counter control the symptoms.
Next Steps
Consult your Psychiatrist.
Health Tips
Don't stop any medication on your own as it can have a severe consequences.