My father left hand shakes from couple of months and numbness in left side and while talking slides changes in tone, visited a physician and said its parkinson diseases and advised this below treatment tab pan 40 once before breakfast tab atorva 40 mg once at night tab ecosprin in afternoon tab strocit plus twice a day tab etrobax if there is a pain taking this from 2 months but there is no improvement so physician advised tab pacitane 4 mg, but we could not find 4 mg so giving 2 tablets for 2 mg and doctor advised once at night and due to misunderstanding we gave twice a day 4 mg each and from that time we noticed his hand shaking stops but he is forgetting things and talking to himself and looks confused. Is it because of overdosed, and I searched online many doctors giving 2 mg, we should give 2 mg or 4 mg. Now we thought of stopping that pacitane for few days and then start only at night so confused should we go with 2 mg or 4 mg. Kindly advise what we should do in this situation. Thanks.