B12 Injection DRIP AND DIP Neurobion is a combination of vitamin B1, B6 and B12 which supports healthy nerves and reduces symptoms of numbness and tingling. Neurobion injection is available at DnD to supplement those with vitamin B Lean IV Kit Turn Fat Into Energy Boost Metabolism Foliphos Injection Greyhound Products Direct Hi I bought the B12 injectable liquid but there's no use by date on it or how long you have to use it once it's opened. Anyone know the answer? TIA x