My mother is facing BP issues.

We have done a health check for my mother who is a bp patient and the doctor has prescribed to change the existing bp medicine which caused her a lot of issues for a month. Then we visited another doctor who is a cardiologist who said nothing major and changed it back to old medicine She is consuming these medicines and getting better, however the recovery is slow. She is having a lot of cough which has started after consuming ecosprin 75 with nebistar sa and cardace 5 Please comment to help us better understand the effects of these medicines. Is cough a side effect of using these medicines? We have a appointment scheduled for April month and doctor has asked us to continue with it till April. Thank you.