b12 vitamin injection side effects Are Shots Safe? Royal Palm Beach Medical Group Feeling worse after B12 Injection:

Vitamin injections are safe and effective, and they have been used for more than a century for both preventive and therapeutic purposes

They found that sedentary mice treated with 5-amino-1MQ and mice that underwent vigorous exercise had significantly lower levels of muscle cell fats, suggesting improved muscle quality

For a weekly 1000 mcg dose, you need 1 mL if its 1000 mcg/mL

Post-injection care : Gently massage the site afterward to help disperse the vitamin and reduce localized soreness

That convenience is real, but it is a practical convenience, not evidence of pharmacological equivalence to the injected route

You dont get a B12 shot