How quickly does GLP-1 medication lower A1C?
A1C usually starts to drop within the first 4 to 8 weeks of therapy and keeps drifting down for several months as the dose climbs and weight comes off. In trials of semaglutide and tirzepatide for type 2 diabetes, average A1C drops of around 1.0 to 1.5 percentage points by week 24 are common, with larger drops at higher starting A1Cs. Without diabetes, the change is smaller but real. The trend matters more than any single number: a steady downward slope is what you want to see. Phaze plots A1C alongside your dose schedule, so a drop after a step-up is easy to spot, and a stall is just as easy to surface for a doctor visit.
Phaze Guides
Read the full guide on lab tracking on GLP-1
Which labs matter, how often to check them, and how to read your trends in plain English.
Related questions
- What labs should I get before starting GLP-1 medication?
- How often should I get bloodwork while on GLP-1?
- Does Ozempic affect liver enzymes?
- Which lipid panel should I run on GLP-1?
- How is kidney function monitored on GLP-1?
- Should I check my thyroid on GLP-1 medication?
- Is vitamin D deficiency common on GLP-1?
- How do I read my own lab results?
- How does Phaze track lab results compared to a notebook?
Track every lab. Understand every value.
Phaze provides general health software, not medical advice. Talk to your doctor.