B12 by nose instead of by needle.
D000281:Administration, Intranasal; D003677:Deficiency Diseases / Q000517:prevention & control; D005782:Gels; D006801:Humans; D012648:Self Care; D014805:Vitamin B 12 / Q000008:administration & dosage*
D005782:Gels; D014805:Vitamin B 12