My mother( is suffering from common variable immunodeficiency(CVID) and in the year 2021 we consulted pediatric immunlogist and got to know about this CVID. Doctor suggested her to take IVIG every month but my mother gets  severe side effects( like sudden heart beat increases,chills,vomiting) during and after the IVIG process and becomes very tired.So however we are managing her to give every 3 months once but nowadays the side effects has become severe that she is not ready to take the IVIG.Every 3 months it has become very tough for us to convince her.Please are there any other medicines or tablets for this CVID Also she doesn't have any other health issues