Many patients struggling with weight loss on tirzepatide have not yet reached the 15 mg dose, and increasing the dose within the approved range may produce better results than adding a second medication
Notably, the deletion of lipogenic enzymes in the liver, such as acetyl-CoA carboxylase 1/2 (ACC1/2), has been reported to liberate NADPH for antioxidant processes, including GSH regeneration 87
Side Effects Comparison# Retatrutide Side Effects# Phase 2 data (n=338 obesity trial): Nausea : ~25% at higher doses (8-12 mg) Diarrhea : ~20% Vomiting : ~15% Constipation : Common Decreased appetite : Common (pharmacological effect) Heart rate : Small increase (2-4 bpm), potentially related to glucagon component Injection site reactions : Mild, transient Discontinuation rate : 6-10% due to adverse events The glucagon receptor component introduces theoretical concerns for hyperglycemia (counterbalanced by GLP-1/GIP in practice), cardiovascular effects (chronotropic glucagon action), and hepatic effects, none of which produced safety signals in Phase 2 but require larger-scale monitoring
L-carnitine is also used in eye drops for dry eyes
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