My father met with an accident and sustained brachial plexus injury..his left hand is not functioning..he is having severe neuropathic pain..he is taking pregaba M 75 tablet twice a day( suggested by our physiotherapist).. only then he is able to manage the pain..his age is 70 years..is it safe to take pragaba M 75 twice a day ,as methylcobalamin increases vit
b12 level in the blood??... kindly help me