Trial readouts
What the latest Phase 2 and Phase 3 trials reported, the effect sizes that matter, and how to read the safety signals around them.
COMBINE 4: IcoSema vs insulin glargine
COMBINE 4 put once-weekly IcoSema against daily insulin glargine U100 in type 2 diabetes. HbA1c fell further, and bodyweight moved the other way.
Tirzepatide, blood pressure, cholesterol
A SURMOUNT post hoc analysis scores tirzepatide on all three targets at once. Between 32% and 38% of participants hit every one. Composites read differently.
TRIUMPH-1: retatrutide hits 28.3% weight loss at 80 weeks
Eli Lilly's first general-obesity Phase 3 readout for retatrutide: 28.3% mean body-weight reduction at 80 weeks on 12 mg weekly. Larger than any SURMOUNT-5 figure to date.
Browse other coverage
Latest from the blog
Weight Regain After Stopping GLP-1 Drugs
A 2026 Bayesian meta-analysis maps how quickly body weight returns after stopping semaglutide or tirzepatide and what the trajectory looks like over time.
GLP-1 in PCOS: the fertility evidence gaps
A scientific debate in Clinical Nutrition ESPEN spotlights how much the field still does not know about semaglutide, PCOS, and fertility.
Tirzepatide powder: what the label says
Forum questions about reconstituting tirzepatide powder reveal a key fact: FDA-approved tirzepatide is supplied ready-to-inject, not as a lyophilized powder.
Tirzepatide vs care in early T2D at 2 years
A 2-year trial in Annals of Internal Medicine finds tirzepatide reduces HbA1c and weight more than intensified conventional care in early T2D.
Tirzepatide vs semaglutide: meta-analysis
A 2026 meta-analysis in Clinical Obesity pooled head-to-head and indirect trial data comparing tirzepatide and semaglutide for weight loss.
Is CJC-1295/ipamorelin flushing normal?
Facial flushing after CJC-1295 and ipamorelin injections is a known, documented reaction pattern for this peptide class, not an unusual one.