B12 supplementation is generally safe in pregnancy with no established upper limit due to low toxicity
doi:10.1146/annurev.nu.05.070185.000555
Infantile presentation of Lehman syndrome with multiple lateral meningoceles, dural ectasias, and herniation of conus: a rare case report
The dose and how often it is given depend on how severe the condition is and the patients health
Call 999 or attend an emergency department immediately if experiencing symptoms of anaphylaxis (difficulty breathing, severe rash, swelling of face/throat, feeling faint)
These products are often sold with the barrel size, unit capacity, needle gauge, and needle length already listed together