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With more than 7,000 known peptides in humans alone, these chains of amino acids are known to regulate a wide range of biological functions and processes in our bodies and also provide a wide range of therapeutic applications

Common side effects are rare but may include: Mild gastrointestinal symptoms such as nausea or diarrhoea (though less common with sublingual than oral routes) Headache or dizziness in some users Skin reactions, including itching or rash, particularly in individuals sensitive to cobalt (a component of cobalamin) Unlike some other B vitamins, oral B12 supplements rarely affect urine colour

If minor weight regain has occurred, determine whether it is dose-related or lifestyle-related before adjusting medication