Thank you for the information. I supplemented with Methylcobalamin up through the middle of January. I just started back and have skipped the shot per your advice. So from what you are saying is I shouldn't worry too much about going too high with my level and continue with the methylcobalamin orally between somewhere between 1000 to 5000mcg per day moving forward. The good news is my levels did bump nicely from 223 in Oct to 1309 in January and stayed relatively high at 935 last week. Hopefully, the burning/pain in my feet will go away eventually.