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However, the effectiveness of B12 injections may vary from person to person

Its gentle formulation makes it suitable for daily use on all skin types, including sensitive skin

Cardiovascular (Heart and Blood Vessel) Complications In rare but serious cases, B12 replacement can lead to heart and blood vessel problems: Shortness of breath Peripheral edema (swelling in legs and arms) Rapid weight gain Pulmonary edema (fluid in lungs) Congestive heart failure (heart cannot pump effectively) Blood clots in vessels These complications arise from increased blood volume, thicker blood, and sudden changes in how hard the heart needs to work

Thus, a larger-scale multi-center study will be considered in the future to minimize the potential interference of these factors

Some patients pursue it alongside broader NAD+ support as part of a longevity-minded plan