I am having sore throat and feel like something is there in right side of throat from more than a month, right ear also pain sometimes. I show it to the 4 different ENT doctors, they did endoscopy and once mri also, those are normal. I took some antibiotics also advised by doctor, did gargles, I did blood test also in that B12 level is 117 rest all normal. I took one B12 injection and taking nervijon tablets daily one from last one week for B12 but problem is still there. please advice what to do.