Thiamine infusion, also known as vitamin B1, is a water-soluble nutrient essential for various bodily functions. A thiamine injection of 100mg/2mL is a high-dose form administered intramuscularly. It is often prescribed to address lacks in thiamine, which can lead to complications such Procaine Penicillin(0.4mega/7ml) 400.000 U/7ml as beriberi.