In general, organ meats, like kidneys or livers from animals, are very high in B12
More rarely, more serious reactions may occur, such as allergic reactions (urticaria, itching, shortness of breath, facial swelling), heart failure in people with pre-existing problems, or hypokalemia (low potassium levels) at the beginning of treatment due to increased hematopoiesis
the disulfide bond is sensitive to strongly reducing conditions
Prior to mixing, powdered HCG can be kept at room temperature
As the However, while risks of severe toxicity are low, some side effects are still possible, such as: temporary symptoms, such as itching, swelling, or diarrhea allergic reaction damage from the injection hypokalemia, or low potassium levels infection negative interactions with certain medications, such as: metformin (Fortamet, Glucophage, Riomet) medications to reduce gastric acid, such as proton pump inhibitors or H2 receptor antagonists Always talk with a doctor before using vitamin B12 supplements