i am currently supplementing b12 through b complex effervescent drinks which have about 300% of DRI. to be honest i’m getting a bit sick of it and it’s taken a very long time to raise my levels. therefore i am looking for some suggestions of good supplements,?eg patches, nasal sprays etc. i would also appreciate your experience with them.
many thanks x
EDIT: sorry i should have clarified i do not have an absorption issue and was most likely nitrous oxide induced deficiency