Delighted I received my B12. I don't see a use by date on them or am I missing it? Purpose of FitShot Injection HomeKit at VITAstir Clinic Vitamin Injections B12 Shots IV Therapy The Feline Essentials B12 has definitely improved my cat's appetite and appearance in recovering from Pancreatitis. I started using the B12 last week in combination with the CATalyst product that I've been 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 5 Ways Lipotropic B12 Injections Help You In Weight Loss