User-Friendly Tips for Taking Vitamin B12 Injections Taking Vitamin B12 injections can be a straightforward process
Any weird side effects
When your body doesnt have enough of it, you may feel tired, weak, and even struggle with memory or concentration
Whether any of that holds is a question about evidence, and the evidence is genuinely contradictory rather than merely thin
These can include mild soreness or bruising at the injection site, dizziness, or in very rare cases, allergic reactions
Weekly Metrics Worth Tracking Pain at rest (NRS 0 to 10), recorded at the same time each day (morning before activity works well) Pain with the most provocative exercise movement for that injury Range of motion at the affected joint, measured with a goniometer or a reliable phone app Functional milestones: for example, single-leg heel raise repetitions for Achilles tendinopathy, or overhead press weight for shoulder pathology When to Contact Your Prescriber Contact your prescriber if pain acutely worsens after a period of improvement, if you develop swelling or heat at the injury site suggesting possible infection (particularly if you are injecting locally), or if you notice any new and unexplained neurological symptoms such as numbness, tingling, or weakness in a limb