GLP-1 tachyphylaxis
What a GLP-1 receptor agonist actually does: which receptors it reaches, how it slows gastric emptying, and the satiety pathway it runs through.
What is GLP-1 tachyphylaxis?
Weight loss flattening at a stable dose as the drug's effect wears down, a form of pharmacological tolerance.
It is documented in rodent models and clinically suspected in some long-term users who stall short of their goal while still dosing. The proposed mechanism is receptor downregulation or β-arrestin desensitization. Microdosing protocols and drug holidays get sold as the fix; no randomized data support that.
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GLP Watchdog writes these definitions from FDA labels and peer-reviewed PubMed literature.
Where GLP-1 tachyphylaxis comes up on this site
Connected terms
Other terms under Mechanism
- GLP-1 receptor
- GIP receptor
- Dual agonist
- Gastric emptying
- Food noise
- Triple agonist
- Amylin
- Non-peptide GLP-1 agonist
- A1C (glycated hemoglobin)
- MASH / MASLD
- TBWL (Total Body Weight Loss)
- C-peptide
- eGFR (estimated glomerular filtration rate)
- Visceral adipose tissue (VAT)
- AHI (apnea-hypopnea index)
- SNAC (oral semaglutide absorption enhancer)
Where the evidence lives
- The full GLP-1 glossary (150 terms, 8 categories)
- Research articles — written from primary sources
- Tools and calculators
- Compare GLP-1 telehealth providers