is vitamin b12 injection painful

https://framerusercontent.com/images/zeppmfOiKUZyJKK9ORb1WDB4UU.jpg?width=1024&height=572 Vitamin B12 Injection - Single Dose Vial Sterile water 20 ml ‍ ‍ Small needle, big results Subcutaneous injections mean smaller needles, easier dosing and less painful than traditional intramuscular injections Size:100 ml

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