It makes it appropriate for a different use case: the person who already controls their diet, exercises consistently, and wants a modest additional push in fat mobilization without the gastrointestinal side effects, nausea, or hormonal disruption that come with GLP-1 agonists
What about dosage
(PubMed) Fujii T, Salanti G, Belletti A, et al
Inositol, a vitamin-like substance, aids in regulating insulin and serotonin levels, contributing to mood enhancement and appetite control
Summary: Vitamin B12 supplements can trigger acne in some susceptible individuals, particularly at high doses, by altering skin bacteria behaviour and inflammatory responses
Vitamin B12 deficiency can lead to the development of megaloblastic anemia, demyelination, and other types of neurological damage