The formal pharmacokinetic data showing a 33% increase in levothyroxine exposure was studied with oral semaglutide specifically, but injectable formulations of both drugs also slow gastric emptying enough to affect thyroid medication absorption
Cornu M, Modi H, Kawamori D, Kulkarni RN, Joffraud M, Thorens B: Glucagon-like peptide-1 increases beta-cell glucose competence and proliferation by translational induction of insulin-like growth factor-1 receptor expression
L-carnitine: Heart Disease's Chemical Culprit
Since injectable therapy typically begins at low doses and gradually titrates upward regardless of prior GLP-1 exposure, this approach maintains continuity while allowing your body to adjust to the new absorption pattern
Its not a failure - its biology 1
Improved Energy Levels: People who use L-carnitine supplements have also reported increased energy levels and a remarkable drop in fatigue