Excipients such as sorbitol, mannitol (sugar alcohols), lactose (in those with intolerance), and various binding agents or fillers may contribute to gastrointestinal symptoms
The health of your gut directly influences how much natural GLP-1 your body produces, how effectively it functions, and how you respond to exogenous GLP-1 medications
(Urbina et al., Clinical Obesity 2026)
Some have a bit of research backing them up, but honestly, the jury's still out on whether many of these supplements do much of anything at all
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With DPP4 inhibitors as a comparator previously shown to have neutral effects on cognition [10, 11], the present study demonstrates that SGLT2 inhibitors may reduce dementia risk in adults with type 2 diabetes aged 60 years, but the association between the study GLP1 receptor agonists and dementia risk reduction is less certain