Metformin in the management of antipsychotic-induced weight gain in adults with psychosis: development of the first evidence-based guideline using GRADE methodology

https://pmc.ncbi.nlm.nih.gov/articles/PMC8788031/

See also

https://www.oxfordhealthformulary.nhs.uk/docs/Guidelines%20for%20the%20use%20of%20metformin%20in%20antipsychotic%20induced%20weight%20gain%20Oct%202013.pdf

https://www.psychiatryonline.org/doi/10.1176/appi.pn.2025.02.2.8