what happens after taking vitamin b12 injection Injections Why do I feel worse

In the three months before they started the vitamin C, they had averaged four canker sores each, but in the three months they were on it, they each had less than one on average

Levy A, Blacher E, Vaknine H, Lund FE, Stein R, Mayo L

Guotong said, "I have already received my 10th procedure, but I skipped some treatments due to business trips and filming, and I dyed my hair so it's not obvious," but added, "Pictures taken by medical staff have confirmed that some of the new growing roots have turned black." Guotong is reportedly being treated at a hospital in Shanghai

Q: What is the dosage form and how is it supplied

and M.F