I could understand that
Unauthorized drugs may also: lead to infections, allergic reactions, and other serious complications contain too much, too little, or none of the active ingredient contain unlisted, dangerous or unknown ingredients contain contaminants, such as solvents, heavy metals, particles (fibers, glass, plastic), or microbials (bacteria, fungi, endotoxins) be poorly or incorrectly labelled be improperly manufactured or stored interact with other medications or health products you may be taking
Slow IV injection is an option when immediate availability of the vitamins is desired or if the patient is already receiving IV fluids
Avoid anything larger than 27G for subcutaneous injection
Timing of cold application significantly influences outcomes