self injection of b12 How to self-inject intramuscular vitamin - Overview How to Give Yourself a
Description
Pre-treatment protocol: Combine pre-injection antihistamine (1 hour before) with pre-injection ice (30 to 60 seconds before) and post-injection cold compress (10 to 15 minutes after) for maximum prevention

Some may also notice a swollen, inflamed tongue
(PubMed) Gunabalasingam S, De Almeida Lima Slizys D, Quotah O, et al

By enhancing oxygen transport, it promotes greater energy and vitality

Results vary, but many patients notice changes within a few weeks
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[26] [27] [28] Among other problems, weakened immunity, reduced fertility and interruption of blood circulation in women may occur