best time to take vitamin b12 injections for Maximum Absorption The Complete Guide to B12

Vitamin B12 injections are used to treat low B12 levels when diet or tablets are not enough

[PubMed Citation] Zerbe NF, Wagner BK

In rare cases, allergic reactions like itching or rash may occur

The most commonly reported side effects are mild and transient, including injection site reactions (redness, slight swelling, or tenderness), mild headaches during the initial days of use, and occasional dizziness or lightheadedness, particularly when starting the peptide

4 Patients may also have some GI upset with nausea, vomiting, or diarrhea

Fish, meat, poultry, eggs, milk, and other dairy products, which also contain vitamin B12