Medication

Hi! My dad was diagnosed a few years ago. Up until the summer last year he was still quite active. He has deteriorated these past months and i’m trying to work out if it is to do with his medication as i notice from reading previous posts that Madopar and Co-Beneldopa are the same medication)? Is that correct as dad is taking 2 madpopar - 1 morning and 1 night and he is taking 3 co-beneldopa, 1 morning, 1 dinner and 1 at tea time? I just want dad to have the best life possible. It is taking its toll on both him and mum😳