my father is 83, takes metformin for diabetes for many years, drank alcohol (at times excessively) for many years and currently partakes in 1/2 glass of wine with dinner, eats a fairly standard north american diet of dairy/wheat/sugar....currently symptoms are nausea, dizziness, weakness, severe neck and shoulder pain (could be bursitis related), increased slurring and frequent confusion/forgetfulness, constipation, headaches....