allergic reaction to vitamin b12 injection supplement allergy: Symptoms, side effects, warning signs, and when seek help​ Vitamin B Complex Side Effect

Possible mild effects : local injection site soreness, slight flushing Rare : nausea, dizziness, allergic reaction Contraindications : hypersensitivity to any component

For most patients, high-dose oral B12 supplements are as effective as intramuscular injections

Cyanocobalamin contains a cyanide molecule instead of a methyl group, making it inactive and potentially harmful

There is no ache like you get from a vaccine

A small number of cancers (basal cell carcinoma, breast cancer, malignant melanoma, lipoma, squamous cell carcinoma) were reported during the 12-week oral METAOD005 trial

After that, they are given once a month to keep levels up