b12 injection and hives Compounded Hydroxocobalamin (Vitamin B12) Feeling worse after B12 Injection:

While it provides significant benefits, it should be used with caution in patients with heart diseases

18 Support for the poorer bioavailability of cyano-B12 comes from a study comparing sublingual cyano- with methyl-B12 (both 1000 g per day), which found that both forms led to a normalisation of B12 status, but B12 levels increased significantly more in the methyl-B12 form compared with the cyano-B12 form, although the formulations also had other differences the former was a tablet, the latter a spray

For the BMJ authors, the clinical picture is the most important factor in determining whether someone has B12 deficiency

Recent reports show that pretreatment with curcumin can ameliorate cisplatin-induced kidney damage by suppressing inflammation and apoptosis [157]