can b12 injections cause fever Vitamin B12: Symptoms, Dosage & Toxicity Risks Vitamin B12 Injections Side Effects
Description
As discussed above, elevated serum B12 is often a marker of underlying conditions rather than a direct consequence of supplementation

As an injectable supplement, L-carnitine has been employed to support various health conditions, including heart and circulatory issues, as well as to enhance athletic performance

[DOI] [PubMed] [Google Scholar] 119.Provenzale D., Reinhold R.B., Golner B., Irwin V., Dallal G.E., Papathanasopoulos N., Sahyoun N., Samloff I.M., Russell R.M
Even so it was impossible
