Headache Mild diarrhea Mild pain or redness at the injection site Nausea Serious or rare side effects Stop taking Vitamin B12 Injection and seek immediate medical attention right away if you experience any of the following: Allergic reactions, including angioedema, hives, and trouble breathing Signs of heart problems, including swelling, rapid weight gain, and shortness of breath Signs of hypokalemia, including muscle weakness, slow or irregular heartbeat Contraindications: This is not an exhaustive list of contraindications
The main challenge is the altitude, which is why we climb slowly, drink water, and use oxygen if necessary
Patients self-injecting vitamin B12 without telling their GP, finds study A large proportion of patients with a vitamin B12 deficiency self-inject medication sourced online, citing difficulty with accessing treatment from GPs
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