Hi, last b12 blood test reading back in Dec was 174. Doctor said it wouldn't account for my numb toes. Saw a neurologist in Feb who diagnosed poly neuropathy. In March my fingertips began losing sensation. I read about possible links between both propranolol and omeprazole and neuropathy and stopped taking both. Persuaded my GP to give me a b12 loading dose. I felt a huge lift in mood and an improvement in the numbness. Last injection 29th March. Tried unsuccessfully to get further injections. I feel like a junkie trying to get a fix. I honestly believe heroin would be easier to come by than b12. Today depression has hit me like running into a wall. Is this normal? Is there any hope of recovering sensation after such a long time?