Simply stop injecting at the end of your cycle and begin the 4-week break
doi:10.1016/S0140-6736(16)31711-1 Langan RC, Gotsch PB, Krafczyk MA, Skillinge DD
Small batches, Miron violet glass packaging (which filters damaging light wavelengths), spray applicator to minimise air exposure and refrigerated storage
You should get B12 shots weekly to monthly for maintenance and IV infusions monthly to quarterly for broader wellness support, though frequency depends on deficiency severity, health goals, and your providers recommendation
Therefore, a shot administered quickly and without the cream will typically not be felt
You should contact your GP if: Your B12 level is significantly elevated (markedly above your local laboratory's reference range) without obvious explanation such as supplementation You have persistent elevation on repeat testing You experience unexplained symptoms such as unintentional weight loss, persistent fatigue, night sweats, fever, or abdominal discomfort You notice unusual bruising, bleeding, or enlarged lymph nodes You have jaundice (yellowing of skin or eyes) or other signs of liver disease You have a history of liver disease, kidney disease, or blood disorders Immediate medical attention (contact NHS 111 or attend A&E) is warranted if you experience severe symptoms such as significant bleeding, severe abdominal pain, confusion, or signs of acute illness, though these would rarely be directly related to elevated B12 itself