Important limitations
- Safety & Tolerability: The main limitation highlighted by the current source
Orforglipron (Foundayo, development code LY3502970) is a once-daily oral GLP-1 receptor agonist, originally discovered at Chugai Pharmaceutical and out-licensed in 2018.
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What published studies and recent community write-ups report about amounts, timing and course length. 9 clinical and 4 community-reported rows, each linked to its source. These are descriptions of what others report, not instructions, and nothing here is medical advice.
| Context | Dose | Frequency | Route | Course | Source |
|---|---|---|---|---|---|
| Clinical9 rows | |||||
| FDA label, Foundayo tabletsAdults with obesity, or overweight with at least one weight-related condition | 0.8 mg to start, then 2.5 mg, 5.5 mg, and optionally 9 mg, 14.5 mg or 17.2 mg; maximum 17.2 mg | Once daily, any time of day, with or without food | Oral tablet, swallowed whole, one tablet per day | Long-term; at least 30 days at each dosage level before stepping upNone; if 7 or more consecutive doses are missed, escalation is restarted at a lower dosage | DailyMed, National Library of Medicine2026 |
| The label ties the stepwise escalation directly to reducing gastrointestinal reactions and makes each increase conditional on response and tolerability. It caps the dose at 9 mg with a strong CYP3A4 inhibitor, carries a boxed warning about thyroid C-cell tumours (contraindicated with a personal or family history of medullary thyroid carcinoma or MEN 2), and advises women on oral contraceptives to add or switch to a non-oral method for 30 days after starting and after each escalation. | |||||
| Phase 3 ATTAIN-1 (obesity without diabetes)3,127 adults with obesity, or overweight with a comorbidity, and no diabetes | 6, 12 or 36 mg maintenance (capsule doses), starting at 1 mg | Once daily | Oral | 72 weeksNone; dose reduction was allowed only for gastrointestinal tolerability after other measures failed | New England Journal of Medicine (PubMed)2025 |
| Mean weight change at 72 weeks was 7.5%, 8.4% and 11.2% on 6, 12 and 36 mg versus 2.1% on placebo by the treatment-regimen estimand, and on 36 mg 54.6% of patients lost at least 10% and 18.4% at least 20%. Waist circumference, systolic blood pressure, triglycerides and non-HDL cholesterol all improved, and adverse events led 5.3% to 10.3% of treated patients to stop versus 2.7% on placebo. | |||||
| Phase 3 ATTAIN-1 dose-escalation ladderAdults randomized to orforglipron in ATTAIN-1 and ATTAIN-2 | 1 mg start, then 3, 6, 12 and 24 mg steps toward 6, 12 or 36 mg maintenance | Once daily, stepping up every 4 weeks | Oral | 4-20 weeks of escalation depending on the target dose, then maintenance to week 72None; dose reduction permitted only for gastrointestinal tolerability | Manufacturer investor release2025 |
| The sponsor describes a fixed ladder: 6 mg reached through 1 and 3 mg, 12 mg through 1, 3 and 6 mg, and 36 mg through 1, 3, 6, 12 and 24 mg, each held four weeks. The company notes the trial paired the drug with a balanced healthy diet rather than a reduced-calorie diet, and required a history of at least one unsuccessful dieting attempt for entry. | |||||
| Phase 3 ATTAIN-2 (obesity with type 2 diabetes)1,613 adults with a BMI of 27 or more, type 2 diabetes and HbA1c of 7-10% | 6, 12 or 36 mg maintenance, starting at 1 mg | Once daily | Oral | 72 weeks after a dose-escalation phaseNone | The Lancet (PubMed)2026 |
| Mean weight change at 72 weeks was 5.1%, 7.0% and 9.6% on 6, 12 and 36 mg versus 2.5% on placebo by the treatment-regimen estimand, with every prespecified weight and cardiometabolic measure including HbA1c improving. Discontinuation for adverse events ran 6.1% to 9.9% against 4.1% on placebo, and gastrointestinal events were mostly mild to moderate and clustered during escalation. | |||||
| Phase 3 ACHIEVE-1 (early type 2 diabetes)559 adults with type 2 diabetes managed by diet and exercise alone, HbA1c 7.0-9.5%, BMI 23 or more | 3, 12 or 36 mg | Once daily | Oral | 40 weeksNone | New England Journal of Medicine (PubMed)2025 |
| HbA1c fell 1.24, 1.47 and 1.48 percentage points from a baseline of 8.0% against 0.41 on placebo, landing patients at 6.5-6.7%, while weight fell 4.5%, 5.8% and 7.6% versus 1.7% on placebo. No severe hypoglycemia occurred and 4.4% to 7.8% of treated participants stopped for adverse events against 1.4% on placebo. | |||||
| Phase 3 ACHIEVE-3 (head to head with oral semaglutide)1,698 adults with type 2 diabetes inadequately controlled on metformin, BMI 25 or more | 12 mg or 36 mg orforglipron against oral semaglutide 7 mg or 14 mg | Once daily, after an up-to-4-week lead-in | Oral | 52 weeksNone | The Lancet (PubMed)2026 |
| From a baseline HbA1c of 8.3%, reductions were 1.71% and 1.91% on orforglipron 12 and 36 mg against 1.23% and 1.47% on semaglutide 7 and 14 mg, so both orforglipron doses were superior to both comparator doses. Gastrointestinal events (58-59% versus 37-45%), discontinuation for adverse events (9-10% versus 4-5%) and mean pulse rise (3.7-4.7 bpm versus 1.0-1.5 bpm) were all higher with orforglipron. | |||||
| Phase 3 ACHIEVE-2 (head to head with dapagliflozin)962 adults with type 2 diabetes on at least 1500 mg of metformin a day, HbA1c 7.0-10.5% | 3, 12 or 36 mg orforglipron against dapagliflozin 10 mg | Once daily | Oral | 40 weeksNone | The Lancet (PubMed)2026 |
| HbA1c fell 1.23%, 1.50% and 1.56% across the three orforglipron doses against 0.81% with dapagliflozin, meeting non-inferiority and then superiority. Gastrointestinal events affected 46% to 54% of orforglipron participants versus 12% on dapagliflozin, and discontinuation ran 15% to 20% against 6%, with no severe hypoglycemia reported. | |||||
| Phase 3 ACHIEVE-4 (cardiovascular safety against insulin glargine)2,749 adults with type 2 diabetes at increased cardiovascular risk, 85.9% with established cardiovascular disease | Maximum tolerated dose, up to 36 mg capsule (equivalent to 17.2 mg tablet), against titrated insulin glargine | Once daily for both arms | Oral orforglipron versus injected insulin glargine | Event-driven, median follow-up 2 yearsNone | The Lancet (PubMed)2026 |
| Four-component major adverse cardiovascular events occurred in 4.2% on orforglipron versus 5.0% on insulin glargine, meeting non-inferiority with a hazard ratio of 0.84. Gastrointestinal events were far more common with orforglipron (62.1% versus 14.2%) and were the main reason for stopping, while clinically significant hypoglycemia was much less common (6.8% versus 19.2%). | |||||
| Approval summary and development statusAdults with obesity or overweight with a weight-related comorbidity (approved indication) | Tablet strengths of 0.8, 2.5, 5.5, 9, 14.5 and 17.2 mg | Once daily | Oral | Long-term weight managementNone described | Drugs (PubMed)2026 |
| This drug monograph records the April 2026 US approval, pending submissions in the European Union, Japan and Canada, and phase 3 programmes still running in obstructive sleep apnoea, hypertension, stress urinary incontinence, osteoarthritis pain and peripheral arterial disease. Note that trial reports use capsule doses up to 36 mg while the approved tablets are labelled 0.8 to 17.2 mg for equivalent exposure, so the two sets of numbers are not interchangeable. | |||||
| Community-reported4 rows | |||||
| Pharmacy explainer of the approved schedule | 0.8 mg to start, stepping up to a maintenance range of 5.5 mg to 17.2 mg | Once daily, any time of day | Oral tablet | Steps roughly every 30 days; a few months to reach a target doseNone; prescribers may hold a dose longer if side effects bite | Community resource2026 |
| This 2026 dosage page frames 5.5 mg as a natural check-in point where a patient either stays put or keeps climbing every 30 days, and notes that each increase depends on both response and tolerability. It lists the manufacturer's self-pay direct prices as 149 dollars for 0.8 mg, 199 dollars for 2.5 mg and 299 dollars for the four higher strengths. | |||||
| Telehealth explainer written for patients | Six tablet strengths from 0.8 mg to 17.2 mg | Once daily | Oral, with no fasting window | Long-termNot described | Community resource2026 |
| Ro's 2026 explainer stresses the practical difference from oral semaglutide, which must be taken on an empty stomach with a small amount of water followed by a 30-minute wait, and lists the label's gastrointestinal effects plus headache, fatigue, reflux and hair loss. It flags that the drug is processed in the liver, so CYP3A4 inhibitors and inducers can push exposure up or down, and that simvastatin should not exceed 20 mg a day alongside it. | |||||
| Community reports of titration experience | Reported side-effect incidence tracked at the 36 mg trial dose | Once daily, same time each day | Oral | Side effects reported worst in the first 4-8 weeks and at each step upSpending 4 weeks instead of 2 at a level before escalating is the most-cited mitigation | Community resource2026 |
| This roundup describes a consistent user pattern of nausea during each escalation, improvement once a dose settles, and a return of symptoms on the next step, with individual severity varying widely. Its practical tips are slower titration, consistent timing, smaller frequent meals and more fluids; these are aggregated user reports, not trial data. | |||||
| Pre-approval dosing guide built on the trial ladder | 3 mg start, then 6, 12 and 24 mg steps to 36 mg (the trial capsule ladder) | Once daily, morning preferred by most | Oral | Weeks 1-4 at 3 mg, stepping every 4 weeks; maintenance typically reached between weeks 12 and 20Drop back to the previous dose for an extra 4 weeks if a step is poorly tolerated, then retry | Community resource2026 |
| Written in May 2026 from the trial protocols, this guide describes appetite changes within 2-4 weeks, visible weight change from weeks 4-8, and the bulk of the loss accumulating between weeks 12 and 40. It warns that its intermediate doses are trial capsule figures that may differ from the approved label, and notes that weight regain after stopping is common across the drug class. | |||||
The label starts everyone at 0.8 mg once daily, held for at least 30 days, explicitly to limit gastrointestinal reactions. Tablets are swallowed whole at any time of day, with or without food, and no more than one tablet is taken per day.
Two further steps follow, each after at least 30 days, bringing the patient to 5.5 mg by around month three. Community guides treat 5.5 mg as a decision point: stay there if the response is adequate, or keep stepping if not.
Each additional step requires at least 30 days at the current dosage and is conditional on response and tolerability, with 17.2 mg the ceiling. The maximum drops to 9 mg if a strong CYP3A4 inhibitor is taken alongside.
Community guides place appetite changes in the first 2-4 weeks, visible weight change from weeks 4-8, and most of the loss accumulating between weeks 12 and 40 as the dose climbs. Trials measured their primary endpoint much later, at 40 weeks for the diabetes programme and 72 weeks for obesity.
The label says to take a missed dose as soon as possible without doubling up, and to restart escalation at a lower dosage if 7 or more consecutive doses are missed. Community practice for a badly tolerated step is to drop back one level for an extra four weeks and retry.
ATTAIN-1 ran maintenance at 6, 12 or 36 mg capsule doses to week 72, producing mean weight reductions of 7.5%, 8.4% and 11.2% against 2.1% on placebo. Those capsule figures are not the tablet strengths on the label, which run 0.8 to 17.2 mg for equivalent exposure.
Plus 4 community resources (dosing guides, forum threads and vendor write-ups), reported above but not linked.
This process map organizes available educational context. Individual claims remain subject to source-level verification.
How orforglipron works as an oral GLP-1 receptor agonist
Orforglipron (Foundayo, development code LY3502970) is a once-daily oral GLP-1 receptor agonist, originally discovered at Chugai Pharmaceutical and out-licensed in 2018. Unlike semaglutide and tirzepatide it is not a peptide at all but a small synthetic molecule that activates the same receptor, which is why it can be swallowed as an ordinary tablet with no food, water or refrigeration restrictions. The FDA approved it in April 2026 for long-term weight management in adults with obesity, or overweight plus a weight-related condition, alongside a reduced-calorie diet and more physical activity; regulatory submissions for weight management and type 2 diabetes are pending elsewhere. Its phase 3 programme is unusually large for a new entrant, covering obesity (ATTAIN), type 2 diabetes (ACHIEVE) and ongoing trials in sleep apnoea, hypertension, osteoarthritis pain and peripheral arterial disease.
These themes organize the educational information currently available. Individual claims remain under source review and are not treatment claims.
How orforglipron works as an oral GLP-1 receptor agonist
What makes it different from older oral and injectable GLP-1 options
Weight loss and glycemic-control outcomes described in the provided article
How the reported outcomes position orforglipron in the GLP-1 field
Manufacturing, access, and practical advantages
What still needs to be proven
Available context is organized without assigning unsupported study models or evidence grades.
Current development stage and why no consumer dosing guide is shown
How orforglipron works as an oral GLP-1 receptor agonist
What makes it different from older oral and injectable GLP-1 options
Weight loss and glycemic-control outcomes described in the provided article
Sequence, synonyms and registry identifiers as recorded in PubChem, the National Library of Medicine's open chemistry database. Formula, mass and CAS number are summarized at the top of the page.
Foundayo, LY3502970, LY-3502970, OWL833, UNII 7ZW40D021M, CHEMBL4446782, GTPL12175
USUWIEBBBWHKNI-KHIFEHGGSA-N
Orforglipron
LY-3502970
Approximately 29 to 49 hours across tested doses
3-[(1S,2S)-1-[5-[(4S)-2,2-dimethyloxan-4-yl]-2-[(4S)-2-(4-fluoro-3,5-dimethylphenyl)-3-[3-(4-fluoro-1-methylindazol-5-yl)-2-oxoimidazol-1-yl]-4-methyl-6,7-dihydro-4H-pyrazolo[4,3-c]pyridine-5-carbonyl]indol-1-yl]-2-methylcyclopropyl]-4H-1,2,4-oxadiazol-5-one
0 links carried over from the earlier page, awaiting verification.