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Vitamin B12 shots with lipotropics are injectable formulations that combine hydroxocobalamin (the form of vitamin B12 preferred in the NHS) with lipotropic compoundssubstances purported to support fat metabolism

These vary in the strength and consistency of supporting evidence, so it is useful to distinguish between the better-established findings and those representing a more preliminary evidence base

Capsules are generally considered less invasive but may have different absorption and efficacy compared to injectable forms

ConsumerLab explains why taking too much vitamin B-12 can be harmful

doi: 10.1167/iovs.06-1364 168 SchwechterB