Cyanocobalamin Nasal Spray is a prescription medicine used: In people that have corrected or have fixed their short-term causes of vitamin B12 deficiency, the benefit of continued long-term use of Cyanocobalamin Nasal Spray is not known after vitamin B12 deficiency has been corrected
Human trials specifically examining fat loss are limited or absent
You can get cat-specific supplements such as Pet-tinic (US), Hemovet or Tonivit (EU), Thorne's B-Complex vet, etc
They are metabolised via the thiopurine S-methyltransferase (TPMT) enzyme, and polymorphisms in the gene encoding this enzyme can lead to variable enzyme activity and potential toxicity
The receptionist was empathetic and consulted a doctor who came back with a resounding NO
Vitamin B Complex, Menorrhagia, and Cancer: A Critical Review. American Journal of Obstetrics and Gynecology 54.4 (1947): 611-617