Independent GLP-1 journalism · by LunaRx
The GLP-1 newsletter trusted for evidence, not hype.
Clear, source-checked coverage of semaglutide, tirzepatide, weight science, and access — delivered to your inbox.
- Every claim traced to a primary source
- Cited to clinical trials & FDA data
- No hype. No miracle claims.
The GLP Journal
Featured stories
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Guides
Semaglutide and Breastfeeding: What the Milk Studies Actually Found
Two studies measured semaglutide and tirzepatide in human milk and found neither. That is a real finding — but it is not the same as “safe,” it reverses for the tablet, and it misses the concern the researchers say actually matters.
9 min read · Updated Oct 28, 2026
Comparisons
Wegovy Pill vs. Injection: How the Oral and Weekly Versions Compare
The 25 mg Wegovy tablet reached pharmacies in January 2026. Same molecule as the injection — but a different daily routine, and two indications it does not carry.
9 min read · Updated Oct 28, 2026
Medications
Foundayo (Orforglipron): The First GLP-1 Pill With No Food or Water Rules
Lilly's oral GLP-1 was approved April 2026 and starts at $149 a month. What ATTAIN-1 actually showed, the drug interactions peptide GLP-1s don't have, and the unusual boxed warning.
9 min read · Updated Oct 11, 2026
Source-checked, updated as evidence changes
Latest coverage
Research
GLP-1s After Two Years: Staying On, Stepping Down, or Coming Off
10 min read · Updated Oct 10, 2026
Comparisons
Semaglutide vs. Tirzepatide: What the Head-to-Head Trial Showed
7 min read · Updated Oct 10, 2026
Guides
Does Ozempic Affect Your Sex Drive? What the Research Shows
9 min read · Updated Sep 30, 2026
Guides
Does Ozempic Cause Hair Loss? What the Research Shows
7 min read · Updated Sep 29, 2026
News
Retatrutide and 'Research Peptides': Inside the GLP-1 Gray Market Crackdown
7 min read · Updated Sep 29, 2026
Research
The GLP-1 Cost Index: What GLP-1s Actually Cost in 2026
8 min read · Updated Oct 5, 2026
Explore by topic
Guides
Plain-language, evidence-based guides to GLP-1s — how they work, costs, side effects, and the muscle and coming-off questions.
9 articles →
Medications
Drug-by-drug profiles: semaglutide, tirzepatide, liraglutide, and the next generation.
5 articles →
Research
Syntheses of the clinical trial evidence on weight loss, cardiovascular outcomes, and metabolic health.
5 articles →
Comparisons
Side-by-side comparisons of GLP-1 telehealth options, with pricing.
5 articles →
Reviews
Honest, transparently-disclosed reviews of GLP-1 telehealth services.
1 article →
News
What's happening with GLP-1 availability, pricing, and the FDA's position on compounded products.
4 articles →
Español
Cobertura de los GLP-1 en español — cómo funcionan, cuánto cuestan, cómo cuidar el músculo y cómo elegir. Información basada en evidencia para la comunidad hispanohablante.
9 artículos →
What GLP-1s actually cost in 2026
The GLP-1 Cost Index compares insurance, brand list price, manufacturer cash programs, and compounded telehealth, dose by dose, so you can compare the price you'll actually pay at maintenance.
See the Cost Index →