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If the needles going straight into the muscle, hold it at a 90-degree angle away from your skin
MIC B12 give you a very good feeling
The dull throbbing and soreness, side effects of prescribed intramuscular (IM) injections can last forever, even if you self-inject vitamin B12 in the comfort of your own home
When adverse effects occurred, they were typically mild and transient, with the most common being mild to moderate headaches (similar frequency to placebo groups), minor injection site reactions (redness, slight swelling), and gastrointestinal effects at higher oral doses (nausea, diarrhea)
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