“Polynerv” is a high dose vitamin B complex (B1, B6, B12) dietary supplement used to treat vitamin B deficiencies as well as neurogenic pain. It not safe to take drugs or supplements without the approval of your doctor as there is a risk of over-medication and medication interactions. In terms of Polynerv, the most common side effects are related to overdosing on Vitamin B1, B6, or B12 which can lead to skin rashes, hypersensitivity to sun, mental status changes, as well as diarrhea. To determine if Polynerv would benefit your mother, she should be evaluated by her physician.