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Bartus, R
Commonly reported adverse effects are generally mild and may include local injection site reactions when administered via parenteral routes
Be patient the first 1-2 weeks as your levels build
For instance, Joe Rogan once shared a personal experience: I had tendonitis in my elbow that I just could not fix
Excess B12 is excreted in urine, making toxicity extremely rare and high-dose supplementation generally safe
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