Bile salt hydrolases: Gatekeepers of bile acid metabolism and host-microbiome crosstalk in the gastrointestinal tract
Del Duca, F
Two things can shift your thyroid needs during weight loss: Absorption variability (especially early on with dose increases) BNF Body weight changes (thyroid replacement dose requirements can change as weight changes) A practical approach many clinicians use is: Check TSH ( free T4) about 68 weeks after : starting tirzepatide, or a significant dose escalation, or a big, sustained drop in weight NICE also flags that because tirzepatide delays gastric emptying, some oral medicines (particularly those with a narrow therapeutic index) may need monitoring during escalation
The prescription requirement exists because these medications carry real risks, including potential pancreatitis, gallbladder disease, thyroid concerns, and serious gastrointestinal side effects
Norlander AE, Saleh MA, Kamat NV, Ko B, Gnecco J, Zhu L, Dale BL, Iwakura Y, Hoover RS, McDonough AA, Madhur MS