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A flu shot can make your arm sore due to muscle irritation and your immune response, but persistent pain could signal a more serious issue requiring...
Our B-12 shots are currently FREE to anyone who signs up for our custom-dosed (hyper-personalized) Testosterone Replacement Therapy, Hormone Replacement Therapy (estrogen, progesterone, testosterone, etc.) or prescription weight loss (GLP-1 treatments, phentermine, etc.) You can have up to two injections per week at any SynergenX clinic, even two shots at once
Our medical suggestion is to have one Vitamin B12 injection at weekly intervals, up to five shots (so five shots over five weeks)
I learned early on from here that testing your levels once injections start are pointless
