I had a partial gastrectomy 46 years ago and have been on monthly B12 injections since 1972. Suddenly a few months ago my doctor changed it to ever 12 weeks and after blood tests showed I had a high B12 in my bloods. However, I am still very tired after 4 weeks does this mean that my body is not absorbing and how do I prove this so I may continue on a monthly basis.He put me on iron tablets as my levels were low.
May I suggest that you join the Pernicious Anaemia Society forum where you will get help and support . I have had tremendous support from that forum . Unbelievably helpful people on that forum . Very best wishes to you .
I suggest you follow the excellent advice Whitecross has given and join the Pernicious Anaemia Society who may well intercede with your doctor on your behalf.
I am not medically trained but have also had a partial gastrectomy (in 1959) have P.A. and been on cyanocobamalin since 1972.
I wish you well
Thanks Clivealive !