Funding This research did not receive funding
There are now DNA specific tests that can tell patients which medications can work best for them
If a peptide is appropriate, your provider writes the prescription
But we need to strike a balance between these (and other) risks and the benefits of GLP-1 medications in diabetes care, obesity treatment, reducing heart attack risks and extending lives
Timeline 2: One-week washout Day 0: Last Wegovy injection Day 7-14: No injection (washout week) Day 14: First Zepbound injection Day 21: Second Zepbound injection Weeks 6, 10, 14, etc.: Dose increases per titration schedule The washout approach lets semaglutide levels drop before introducing tirzepatide
Once-Weekly Semaglutide in Adults with Overweight or Obesity (STEP 1) , New England Journal of Medicine, 2021 [Accessed 25 June 2026]