is sublingual b12 as effective as injections PDF] vitamin compared to intramuscular injection in patients with type 2 diabetes treated with metformin: a randomised trial Best Form of B12: Comparing

The participant may have a unique skin microbiome profile Antedotal case studies of B12 supplementation and acne development There are a few cases of individuals developing acneiform eruptions after B12 supplementation

It's important to note that unexplained weight loss can be a sign of an underlying health condition and should be investigated by a GP

Curr Vasc Pharmacol

Although your body is unable to generate B-12, the vitamin is readily available from dietary sources including dairy, meat and fish

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You can develop weakness and fatigue easily if you are not producing enough red blood cells your body needs