Retatrutide Bio
Compare available GLP-1 plans

Retatrutide's 24.2% is real. It is also still an unfinished experiment.

In its 48-week phase 2 trial, retatrutide's 12 mg dose cut body weight by a mean 24.2%, a bigger number than any published phase 3 mean for the approved incretin drugs (tirzepatide 20.9%, semaglutide 14.9%). Here is what the sellers quoting that number omit: it comes from 338 people at phase 2, the 14 phase 3 registry records have posted zero results, FDA lists zero approved retatrutide products, and federal law prohibits compounding it. We publish the spectacular numbers and their trial stage together.

Compare available GLP-1 plansBrowse the guides
  • 47fetch-verified citations, 100% peer-reviewed, government, or registry
  • 0FDA-approved retatrutide products (Drugs@FDA returns zero records)
  • 0 of 14phase 3 registry records with posted results
  • 25,364participants enrolled or planned across those 14 phase 3 records

Online care, from intake to delivery

Available GLP-1 care, made simple

Choose your plan, complete a private medical intake, and connect with a licensed provider. If prescribed, treatment ships discreetly to your door.

Available GLP-1 care catalog product image
Provider-reviewed GLP-1 carePrepared after approval
Catalog image. Dispensed product and packaging may vary by pharmacy.

Your care plan includes

Everything you need to get started

From$209per month
Licensed providerMedical reviewIf prescribedTreatment includedAt no added costDiscreet shippingWhen you need itOrder support

Important: Retatrutide remains investigational and is not sold through this checkout. The available treatment shown here is tirzepatide.

Choose your planEligibility is determined after medical review
Due today$239one-time

Encrypted checkout • provider review required • shipping included

  1. 01
    Choose your planSelect the supply and refill preference that works for you.
  2. 02
    Complete your intakeShare your health history in our private, secure flow.
  3. 03
    Provider reviewIf appropriate, your prescription is prepared and shipped.

Prescription treatment requires an online medical evaluation. A provider will determine whether treatment is medically appropriate; approval is not guaranteed.

Key facts

  • Status
  • RouteSubcutaneous injection, once weekly (trial protocols)
  • Single dose noteA body-weight reduction persisted up to day 43 after a single dose in the first-in-human study.
  • UnpublishedNo steady-state timing, absolute bioavailability, or special-population exposure data have been published; there is no label to supply them.
  • Drug classGIP + GLP-1 + glucagon triple receptor agonistBibliographic recordsource
  • Development stagePhase 3 (TRIUMPH and TRANSCEND programs)Registry recordsource
  • Best phase 2 obesity result-24.2% mean weight at 48 weeks (12 mg)Human RCTsource
  • Only published phase 3 resultT2D: HbA1c -1.94 points, weight -15.3% at 40 weeks (12 mg)Human RCTsource
  • Half-lifeAbout 6 daysHuman PKsource
  • Dosing in trialsOnce weekly, subcutaneousHuman RCTsource
  • Phase 3 results posted0 of 14 registry recordsDerived from cited datasource
  • CompoundingProhibited under federal law (FDA)Regulatory recordsource

Read the full Retatrutide monograph

Browse by topic

Everything on Retatrutide, organized the way you research it.

Legal Status26 articlesEvidence10 articlesDosing6 articlesComparisons5 articlesSafety1 article

Free Retatrutide tools

Practical calculators and references, each scoped and sourced.

T-03Study-dose explorerPick a trial and a protocol arm; the explorer shows what that arm actually received and what was measured, with the trial stage pinned to every output. Educational display of published arm-level data; it computes nothing about any person and accepts no personal inputs.T-04Phase timeline explorerThe whole development program as a registry-dated timeline: every phase 3 record with its population, enrollment, status, primary completion date, and a hasResults badge. Filterable by status; each row links its registry record. The point the tool makes visually: 14 phase 3 rows, zero with posted results.

All guides

48 in-depth, individually cited guides.

Legal Status 26 guides

Best peptide company for retatrutide? There isn't a legal oneSearching for the best peptide company for retatrutide? No US seller can lawfully offer it. Here's what FDA rules actually say and what's legal instead.Updated 2026-07-25Read guide →
Best peptide site for retatrutide: a buyer reality checkThere is no legitimate best peptide site for retatrutide. It's unapproved, off the 503A list, and vendor sales aren't lawful. Here's what the evidence and rules actually say.Updated 2026-07-25Read guide →
Best peptide website for retatrutide: there isn't oneSearching for the best peptide website for retatrutide? No such lawful site exists. Here's what FDA rules actually say and what your real options are.Updated 2026-07-25Read guide →
Best place to buy retatrutide: the honest answerThere isn't a lawful one. Retatrutide is unapproved with no compounding pathway. Here's what the law says and what your real options actually are.Updated 2026-07-25Read guide →
2 closely related:Best place to buy retatrutide peptide: the honest answerBest place to buy retatrutide peptides: the honest answer
Best place to buy retatrutide peptides online: reality checkThere is no lawful best place to buy retatrutide online. It's unapproved, not on the 503A list, and vendor RUO labels don't change that. Here's the evidence.Updated 2026-07-25Read guide →
Best place to get retatrutide peptide: the honest answerThere is no lawful US source for retatrutide. It has no FDA approval, no 503A pathway, and no USP monograph. Here's what that means and what to do instead.Updated 2026-07-25Read guide →
Best reta peptide: why that search leads to a dead endSearching for the "best reta peptide" to buy? Retatrutide isn't FDA-approved and has no lawful compounding pathway. Here's what the law and trials actually say.Updated 2026-07-25Read guide →
Best retatrutide peptide: why that search leads nowhere legalThere is no "best retatrutide peptide" to buy. It's not FDA-approved, isn't on the 503A Bulks List, and vendor sales aren't lawful. Here's the real picture.Updated 2026-07-25Read guide →
Best retatrutide peptide company: there isn't a lawful oneSearching for the best retatrutide peptide company? None exist legally. Retatrutide has no FDA approval and no 503A compounding pathway. Here's the real picture.Updated 2026-07-25Read guide →
Best retatrutide vendor: why the honest answer is none existThere is no lawful retatrutide vendor in the US. It's not FDA-approved, not on the 503A Bulks List, and no clinic can legally prescribe it. Here's what that means.Updated 2026-07-25Read guide →
Best source for retatrutide peptides: the honest answerThere is no lawful US source for retatrutide peptides. It's not FDA-approved and isn't on the 503A Bulks List. Here's what that means and your real options.Updated 2026-07-25Read guide →
Do you refrigerate retatrutide? Storage isn't the real issueStorage questions assume you have a vial to store. Retatrutide has no FDA approval and no legal US source, so here's what the trial data and law actually say.Updated 2026-07-25Read guide →
How do I get retatrutide peptide? The honest legal answerShort answer: you can't buy it lawfully. Retatrutide isn't FDA-approved, isn't on the 503A list, and has no compounding pathway. Here's what that means.Updated 2026-07-25Read guide →
How to get retatrutide peptide: what's actually lawful right nowRetatrutide has no FDA approval and no legal compounding pathway in 2026. Here's what the law actually says and what options are legitimate.Updated 2026-07-25Read guide →
How to get retatrutide peptide online: what's actually legalRetatrutide has no FDA approval and no compounding pathway. Here's why online sellers can't legally supply it, and what options actually exist right now.Updated 2026-07-25Read guide →
Reta peptide near me: why you can't legally buy it, and what to doSearching "reta peptide near me"? Retatrutide has zero FDA approval and no compounding pathway. Here's what the law actually says and what's legal instead.Updated 2026-07-25Read guide →
Retatrutide clinical trial doses: what the studies actually usedRetatrutide's phase 2 trial tested doses up to 12 mg weekly, with 24.2% mean weight loss at 48 weeks. Here's what the trial data shows and doesn't.Updated 2026-07-25Read guide →
Retatrutide peptide buy: why it's not legally for sale in the USRetatrutide has no FDA approval and no compounding pathway. Here's what buy-intent searches actually find, why it's unlawful, and what real options exist.Updated 2026-07-25Read guide →
Retatrutide peptide buy near me: why you can't, legallyRetatrutide has no FDA approval and no compounding pathway in the US. Here's what the law actually says, and what lawful options exist instead.Updated 2026-07-25Read guide →
Retatrutide peptide USA price: why you legally can't purchase it yetRetatrutide isn't FDA-approved and has no compounding pathway. Here's what US law actually says, what trials show, and what lawful options exist instead.Updated 2026-07-25Read guide →
Retatrutide clinical trials: what the data actually showsRetatrutide trials show 24.2% mean weight loss at 12mg vs 2.1% placebo at 48 weeks, but zero FDA approval. Here's the full trial record and legal status.Updated 2026-07-25Read guide →
Retatrutide clinical trials near me: how to actually find oneRetatrutide has no FDA approval and no legal compounding pathway. Here's how to search ClinicalTrials.gov for real trial sites and what to do while you wait.Updated 2026-07-25Read guide →
Retatrutide peptide near me: why you can't buy it legally yetSearching for retatrutide peptide near me? No US pharmacy can legally sell or compound it. Here's the FDA law behind that, and what's actually available now.Updated 2026-07-25Read guide →
What are reta peptides? The evidence, legal status explainedReta peptides refers to retatrutide, an unapproved triple-agonist drug still in trials. Here's what the data shows and why it can't be lawfully sold or compounded.Updated 2026-07-25Read guide →

Evidence 10 guides

Cagrilintide with retatrutide: what the evidence actually showsNo trial has tested cagrilintide with retatrutide together, and neither drug is FDA-approved. Here's the real evidence, the legal status, and safer options.Updated 2026-07-25Read guide →
Does peptide science sell retatrutide? What the law actually saysNo lawful US seller can sell retatrutide. It has no FDA approval, isn't on the 503A Bulks List, and vendor disclaimers don't change that. Here's the evidence.Updated 2026-07-25Read guide →
Does Peptide Sciences sell retatrutide? Here's the lawRetatrutide has no FDA approval and isn't on the 503A Bulks List. Here's what that means for any vendor claiming to sell it, and what's legal instead.Updated 2026-07-25Read guide →
How can I get retatrutide peptide? The honest legal answerYou can't legally buy retatrutide. It's unapproved, off the 503A Bulks List, and available only in trials. Here's the real evidence and your lawful options.Updated 2026-07-25Read guide →
1 closely related:How to get reta peptide: the honest legal answer
How does reta peptide work in the body, exactly?Retatrutide hits three gut hormone receptors at once. Here's the actual mechanism, the trial data behind it, and why it's still not legal to buy in the US.Updated 2026-07-25Read guide →
How many units of retatrutide should I take?There is no lawful dose because retatrutide isn't approved or prescribable. Here's what trials actually dosed, in mg not units, and why.Updated 2026-07-25Read guide →
Reta peptide clinical trial: what the data actually showsRetatrutide's phase 2 trial hit 24.2% weight loss at 48 weeks. Here's what the reta peptide clinical trial data shows and why it's still not legal to buy.Updated 2026-07-25Read guide →
Retatrutide peptide: what the name means and what the data showsRetatrutide peptide is an unapproved triple agonist, not a legal supplement. See the trial data, 24.2% weight loss result, and why no US pharmacy can compound it.Updated 2026-07-25Read guide →
Retatrutide peptide results: what the trial data actually showsRetatrutide cut body weight 24.2% at 48 weeks in a phase 2 trial. Here's what the real evidence shows, and why there's no lawful way to obtain it in the US.Updated 2026-07-25Read guide →

Dosing 6 guides

How long can you store retatrutide? Here's the honest answerThere's no approved retatrutide, so no FDA-backed storage data exists. Here's what trial handling practices and peptide stability science actually suggest.Updated 2026-07-25Read guide →
How to reconstitute retatrutide: what the science saysRetatrutide has no FDA approval and no legal compounding pathway. Here's what reconstitution actually means, what trials used, and why you can't get it lawfully.Updated 2026-07-25Read guide →
How to take reta peptide: what trials used and the legal realityThere's no lawful way to take retatrutide today. Here's what the phase 2 trial actually dosed (up to 24.2% weight loss at 12 mg) and why no US pharmacy can compound it.Updated 2026-07-25Read guide →
How to take retatrutide peptide: what the evidence actually saysThere's no lawful way to take retatrutide right now. Here's what trials used, why the drug isn't approved, and what your real options are.Updated 2026-07-25Read guide →
Retatrutide dosage calculator: why none can be lawful right nowA retatrutide dosage calculator sounds useful, but retatrutide has no FDA approval and no legal compounding pathway. Here's what the trial doses were, and why.Updated 2026-07-25Read guide →
Retatrutide dosage chart: what trials actually used, mg by mgRetatrutide dosage chart from the phase 2 trial: 1mg to 12mg arms, 24.2% weight loss at 48 weeks, and why no US pharmacy can legally fill this today.Updated 2026-07-25Read guide →

Comparisons 5 guides

AOD 9604 peptide vs retatrutide: what the evidence showsAOD 9604 has weak fat-loss evidence and no approval. Retatrutide cut weight 24.2% in trials but also lacks approval. Here's what's actually legal.Updated 2026-07-25Read guide →
Best peptides for weight loss: where retatrutide actually standsRetatrutide beat placebo by 22 points in a phase 2 trial, but it's not approved or legally compoundable. Here's what the evidence and the law actually say.Updated 2026-07-25Read guide →
Mazdutide vs retatrutide: what the trial data actually showsMazdutide and retatrutide are both unapproved triple/dual agonists in trials. Neither is legally sold in the US. Here's how the data and legal status compare.Updated 2026-07-25Read guide →
Retatrutide peptide vs GLP-1 drugs: how they actually differRetatrutide hit 24.2% weight loss in trials vs GLP-1 drugs, but it's not FDA-approved and has no lawful compounding path. Here's the real comparison.Updated 2026-07-25Read guide →
Tesamorelin peptide vs retatrutide: what's actually legal and provenTesamorelin is FDA-approved for one narrow use. Retatrutide is not approved at all. Here's the real evidence, dosing data, and legal gap between them.Updated 2026-07-25Read guide →

Safety 1 guide

Retatrutide side effects: what the trial data actually showsRetatrutide caused nausea, vomiting and diarrhea in phase 2 trials, mostly at dose escalation. Here's the real safety data, and why it's still not FDA-approved.Updated 2026-07-25Read guide →

Get the readout alert

One short email when something real changes: a TRIUMPH readout posts, a phase 3 publishes, or an FDA record appears. No dosing advice by email. Unsubscribe anytime.

Free. No spam, unsubscribe anytime. Your address is used for this brief and nothing else.

Compare available GLP-1 plans