vitamin b12 injection cobalamin at a Licensed Pharmacy Serious vitamin B12 deficiency may result in anemia Vitamin B12 - Wikipedia

[106] Other drugs [edit] Certain medications can decrease the absorption of orally consumed vitamin B 12 , including colchicine, extended-release potassium products, and antibiotics such as gentamicin, neomycin and tobramycin

Thus, the radioactivity excreted in the urine during the 24 hours following the administration of the labeled B12 will reveal the answer

Also, helps in the accumulation of excess fat in the liver and other tissues

They can play a role in supporting overall wellness, especially for those with vitamin deficiencies, but they arent a substitute for a healthy diet and regular exercise

That means your body can start using stored fat for energy