My Mum Has Been Prescribed Vesoret And Nu-eye Tablets For

My mum has been prescribed vesoret and nu-eye tablets for her condition. She has lost central vision of the left eye due to amd-dry type. The doctor has put her on this medication for life. It has been 20 days and that she is taking one tablet each of these. Since the past 3 days she is experiencing acute dizziness and today one of her healthy tooth gave in all of a sudden! I wanted to know if that is because of overdozes of the vitamins she has been prescribed and what should be done at this stage? Please help!
Kunal