The drugs being talked about before they are drugs
Every forum thread about weight loss now carries a drug nobody can legally be prescribed. Retatrutide reported a 24.2% mean weight reduction at 48 weeks in a phase 2 trial, which is a larger number than anything approved has produced, and it has no approval anywhere. Orforglipron finished phase 3 and reported 11.2%. Knowing which of those two facts is doing the work in a headline is most of what this page is for.
What this comes down to
- Retatrutide's phase 2 trial enrolled 338 adults with obesity. At 48 weeks, least-squares mean weight change was -24.2% at 12 mg against -2.1% on placebo. Six randomized trials of it are indexed in total.
- Orforglipron is the further along of the two and the smaller number: a phase 3 trial of 3,127 patients reported -11.2% at 36 mg against -2.1% on placebo at 72 weeks. It is a small molecule, not a peptide, which is why it can be a tablet.
- No seller on our roster prices any of these molecules today, and the pattern we used covers retatrutide, cagrilintide, survodutide, mazdutide, orforglipron, amycretin and tesofensine. The same kind of pattern found semaglutide on 213 of the 257 sellers we have read.
- A drug with no approval has no approved indication, no approved dose and no FDA-reviewed labeling. Whatever is in a vial sold under one of these names, nothing has reviewed what it is.
Retatrutide: the biggest number, and the earliest phase
The phase 2 trial enrolled 338 adults with obesity. At 24 weeks, least-squares mean percent weight change was -7.2% at 1 mg, -12.9% at 4 mg, -17.3% at 8 mg and -17.5% at 12 mg, against -1.6% on placebo. At 48 weeks those became -8.7%, -17.1%, -22.8% and -24.2%, against -2.1%. At 12 mg, every participant lost at least 5%, 93% lost at least 10% and 83% lost at least 15%[1]. The adverse events were gastrointestinal and dose-related, and the trial reports dose-dependent increases in heart rate that peaked at 24 weeks and then declined.
A 338-person dose-finding trial is designed to find a signal, not to survive one. The pattern across this whole drug class is that phase 3 results come in below phase 2 results, in larger and less selected populations, over longer periods, with more dropouts. A -24.2% from phase 2 is a reason to run phase 3, not a number to plan a year around.
Orforglipron: further along, and a tablet on purpose
Orforglipron is a small-molecule, non-peptide GLP-1 receptor agonist, which is the whole point of it: a small molecule survives the gut, so it can be a once-daily tablet without the absorption enhancer and the empty-stomach ritual that the approved oral semaglutide requires. Its phase 3 obesity trial randomized 3,127 patients without diabetes across 6 mg, 12 mg, 36 mg and placebo for 72 weeks. Mean weight change was -7.5%, -8.4% and -11.2% against -2.1% on placebo, and adverse events led to discontinuation in 5.3% to 10.3% of treated patients against 2.7% on placebo[2].
Set that beside the head-to-head result and the ordering is clear enough: the approved injections are still the larger effect. SURMOUNT-5 reported -20.2% and -13.7% at 72 weeks for the two approved injectables[5]. An 11.2% oral result is a real drug and a different product, and the reason to want it is convenience rather than magnitude. Neither molecule has an approved product of any kind: asked for a brand name by either ingredient, the openFDA label API returns nothing, while returning six spellings for tirzepatide and four for semaglutide in the same session[3]. Six randomized trials stand behind retatrutide and seventeen behind orforglipron[4].
PubMed, via the E-utilities API
retatrutide[tiab] AND "randomized controlled trial"[pt] AND "humans"[mh]
Returned 6. Positive control — semaglutide, identical trial filter — returned 316 through the identical filter in the same session.
Six randomized trials for retatrutide against 316 for semaglutide, and 17 for orforglipron through the identical filter. Without the trial filter, retatrutide returns 177 records and orforglipron 129 — a literature several times larger than the trial base underneath it, which is what a molecule looks like while everyone is writing about it and few people are testing it.
Nobody on our roster prices one, which is the answer we want
Across the 257 sellers on our price roster, not one publishes a priced line for any of these seven molecules. That is the right answer and it is not a guaranteed one: the same kind of pattern, run in the same pass, found semaglutide on 213 sellers, so the zero is a fact about the menu rather than a broken search. Where these molecules do appear is the research-chemical market, sold by the milligram with no prescription and no pharmacy, and that market is outside everything our grading method can see.
- An unapproved molecule has no approved dose. Every number on a vial of it is somebody's choice, not a reviewed one.
- Phase 2 numbers shrink. Compare like with like: 48-week phase 2 against 72-week phase 3 is not a comparison.
- Ask what is actually in the vial and who tested it. What third-party testing proves is the article about how little a certificate on a website establishes.
- If a seller offers you one of these by name, that tells you something about the seller regardless of the molecule. Where compounded semaglutide stands with the FDA sets out what the rules for an unapproved bulk substance are.
Questions people actually ask
Is retatrutide approved?
No. There is no approved retatrutide product, so there is no approved dose, no approved indication and no FDA-reviewed labeling for it. Six randomized trials of it are indexed in PubMed, against 316 for semaglutide through the identical filter.
How much weight did retatrutide produce in its trial?
In a phase 2 trial of 338 adults with obesity, least-squares mean weight change at 48 weeks was -24.2% at the 12 mg dose against -2.1% on placebo. That is a dose-finding trial rather than a phase 3 result, and numbers in this class generally come down between the two.
Is orforglipron a pill?
It is designed as one. Orforglipron is a small-molecule, non-peptide GLP-1 receptor agonist taken once daily, which is why it does not need the absorption enhancer and empty-stomach routine the approved oral semaglutide tablet requires.
Can I buy these from a telehealth company?
Not lawfully as an approved medicine, because neither molecule has an approved product. What circulates instead is research-grade material sold outside the prescription system entirely, with nothing standing behind what is in the vial.
Sources
Every source here was fetched and read for this article, with the identifier taken off the record that came back and the claim it supports written down beside it. All of it was read in September 2026, the same session the rest of this page draws on.
- 1.Triple-Hormone-Receptor Agonist Retatrutide for Obesity - A Phase 2 Trial. New England Journal of Medicine, 2023. PMID 37366315 · doi:10.1056/NEJMoa2301972A phase 2 trial enrolled 338 adults with obesity. Least-squares mean percent weight change at 24 weeks was -7.2% (1 mg), -12.9% (combined 4 mg), -17.3% (combined 8 mg) and -17.5% (12 mg) against -1.6% on placebo; at 48 weeks, -8.7%, -17.1%, -22.8% and -24.2% against -2.1%. At 48 weeks a reduction of at least 5%, 10% and 15% occurred in 100%, 93% and 83% of participants on 12 mg against 27%, 9% and 2% on placebo. The most common adverse events were gastrointestinal and dose-related, with dose-dependent heart-rate increases peaking at 24 weeks and declining thereafter.
- 2.Orforglipron, an Oral Small-Molecule GLP-1 Receptor Agonist for Obesity Treatment. New England Journal of Medicine, 2025. PMID 40960239 · doi:10.1056/NEJMoa2511774A phase 3, multinational, randomized, double-blind trial of once-daily orforglipron at 6 mg, 12 mg or 36 mg against placebo for 72 weeks in patients with obesity and without diabetes. A total of 3,127 patients underwent randomization. Mean change in body weight at week 72 was -7.5%, -8.4% and -11.2% respectively against -2.1% on placebo. Among patients on 36 mg, 54.6% had a reduction of 10% or more, 36.0% of 15% or more and 18.4% of 20% or more. Adverse events led to treatment discontinuation in 5.3% to 10.3% of orforglipron patients and 2.7% on placebo.
- 3.Structured Product Labeling, queried through the openFDA label API. U.S. Food and Drug Administration, 2026. SourceQueried on 2026-09-12, the openFDA label API returns approved products for semaglutide (OZEMPIC, RYBELSUS, WEGOVY) and tirzepatide (MOUNJARO, ZEPBOUND and their pens) and nothing for the next-generation names, while a fabricated generic name returns HTTP 404 in the same session — so an empty result is an empty result rather than a broken query.
- 4.PubMed, queried through the E-utilities API. National Library of Medicine, 2026. SourceOn 2026-09-12, retatrutide through the randomized-trial and human-indexing filter returned 6 and orforglipron returned 17, against 316 for semaglutide through the identical filter. Without the trial filter, retatrutide returned 177 records and orforglipron 129.
- 5.Tirzepatide as Compared with Semaglutide for the Treatment of Obesity. New England Journal of Medicine, 2025. PMID 40353578 · doi:10.1056/NEJMoa2416394The comparison point for these numbers: in a 72-week randomized head-to-head trial of the two approved injectables, least-squares mean percent weight change was -20.2% with tirzepatide and -13.7% with semaglutide.
Key figures