vitamin b12 injection side effect flushing warmth How Long Do The Effects Of Injections Last Why do I feel so bad after a B12 injection? Benefits of Vitamin B12 Injections

Office of Dietary Supplements Vitamin B12. NIH Office of Dietary Supplements, U.S

The shingles vaccine (Shingrix) may not be right for you if you: Experienced an allergic reaction following your first dose of Shingrix Have tested negative for immunity to the varicella-zoster virus Currently have shingles Are either pregnant or breastfeeding The most common side effect is some pain in your arm at the injection site

No noticeable side effects other than some PIP (which is weird because Ive injected plenty of times before)

More effective if you have to stump up your hard earned cash

These effects will usually resolve within 48 hours

Pernicious anaemia (an autoimmune condition affecting B12 absorption) is a common cause of B12 deficiency that requires specific testing for anti-intrinsic factor antibodies