Because of this, combining them can increase the risk of serious side effects like stomach ulcers, gastrointestinal bleeding, and kidney damage
On February 9, 2026, Novo Nordisk A/S and Novo Nordisk Inc
Kidney Function : Impaired kidney function can slow down semaglutide excretion
Possible Side Effects Mild side effects of Vitamin B12 may include: ( 12 ) Mild pain, itching, or swelling at the injection site Temporary nausea or headache Mild diarrhea Hot flashes Vomiting These side effects do not affect all patients and are generally temporary and mild While rare, more serious side effects of Vitamin B12 injections can include ( 12 ): Irregular heartbeat Heart palpitations Hives or skin rash If you notice any severe reactions to a Vitamin B12 shot, contact a medical professional immediately
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Less common but more serious side effects include allergic reactions, sleep disturbances, joint pain, hyperactivity, carpal tunnel syndrome, diabetes risk, increased intracranial pressure, and the development of antibodies