pain after b12 injection Vitamin Side Effects and Safety What You Need to Know
Description
Concomitant deficiencies (iron, folate), chronic illness, or drug interactions may blunt clinical response and warrant further evaluation
Many notice improved focus and mental sharpness within the first week of treatment
PMID 29216732
They arrive in pre-filled pens at specific, fixed doses
Withdrawal symptoms can be life-threatening, particularly for individuals with seizure disorder or those who abruptly discontinue high doses
doi: 10.1007/s10072-017-3056-9
