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While clinical interactions have not been documented, combining multiple compounds that affect similar pathways increases unpredictability

People with conditions such as pernicious anaemia or other absorption disorders may require regular Vitamin B12 injections

International We ship to the following regions: USA, Canada, Europe, and South Asia (Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, Sri Lanka), and the Middle East (Egypt, Bahrain, Cyprus, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, UAE, Yemen, Turkey)

FDA's 2024 review states the mechanism of action is still unknown, which limits how confidently any specific physiological effect can be predicted in humans