Final purified proteins were stored in 20 mM Tris-HCl pH 8.0, 150 mM NaCl buffer, unless specified otherwise, and stored at 80 C until further use
Clinicians should evaluate for contraindications specific to GLP-1 receptor agonists, including: Personal or family history of medullary thyroid carcinoma Multiple Endocrine Neoplasia syndrome type 2 History of pancreatitis or gallbladder disease Severe gastroparesis or gastrointestinal disease History of suicidal ideation or behavior Pregnancy or planned pregnancy (pregnancy testing when appropriate) Diabetic retinopathy (requires monitoring in patients with diabetes) Baseline investigations should include TSH, free T4, complete metabolic panel, lipid profile, and hemoglobin A1c (if diabetic or prediabetic)
Neither compound is processed through CYP450 liver enzymes, eliminating the most common mechanism for drug-drug interactions
doi: 10.1016/j.jneuroim.2019.04.011 219 ShahrokhiN.KhaksariM.NourizadS.ShahrokhiN.SoltaniZ.GholamhosseinianA
Liver enzymes at 12 weeks for any peptide used at high dose or in combination
Dose Conversion Reference Framework by Concentration Different compounding pharmacies may prepare tirzepatide at various strengths to accommodate patient preferences and provider protocols