what type of cancer is treated with b12 injections Methylcobalamin Injection (Vitamin B12) B12 Injection: Boosting Energy and
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Based on the role of CD38 in the immune system and behavior these may include impaired immune response to infections and neurological abnormalities [40, 50-52, 82-83]

Ozempic is not FDA-approved for weight loss, so most insurance plans wont cover it, unless you have type 2 diabetes as well

The National Academies Press

In these cases, IV B-complex therapy may be considered as supportive care , delivered through clinical assessment and medical oversight

A little difficult to find but I am not from the area
