3 b12 injections a week How Often Can I Take Injections? Benefits of Weekly B12 Injections:
Description
Are the side effects you experience tolerable given the results

My resting heart rate went up a little (enough for my Oura ring to notice) and my perceived effort during exercise was higher during the 3-4 days of highest effectiveness

But hold on a sec

Because CD38 is widely expressed in the brain and plays an essential role in oxytocin release 62,63 , small molecule compounds that can cross the bloodbrain barrier (BBB) pose unacceptable risks of CNS toxicity and are unfit for chronic use
