You can also consider other medications or bariatric surgery
Ogbomida ET, Nakayama SMM, Bortey-Sam N, Oroszlany B, Tongo I, Enuneku AA, Ozekeke O, Ainerua MO, Fasipe IP, Ezemonye LI, Mizukawa H, Ikenaka Y, Ishizuka M (2018) Accumulation patterns and risk assessment of metals and metalloid in muscle and offal of free-range chickens, cattle and goat in Benin City
It can occur at any age but middle-aged and elderly people are likely to get it
As wedgewood said and I experienced fifty years ago after my first loading doses in 1972 some symptoms appear to get worse before they get better as the B12 starts repairing the damage to nerve endings caused by the deficiency and I'm still " clive alive " aged 80