Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Head-to-head comparison of Orforglipron and Semaglutide — mechanism, side effects, legal status, and pricing.
Orforglipron (brand name Foundayo) is Eli Lilly's oral non-peptide small-molecule GLP-1 receptor agonist. Unlike oral semaglutide (Rybelsus), it does not require the SNAC absorption enhancer or fasting/water restrictions — it can be taken any time of day. Not a peptide.
Semaglutide is an FDA-approved GLP-1 receptor agonist marketed as Ozempic (SubQ, type 2 diabetes), Wegovy (SubQ, chronic weight management and cardiovascular risk reduction in obesity), and Rybelsus (oral, type 2 diabetes). It is a synthetic analog of native GLP-1 with a fatty-acid (C18 diacid) side chain that enables albumin binding, giving it a ~165-hour half-life suitable for once-weekly injection.
Orforglipron
Semaglutide
Category
Legal Status
Mechanism
Half-life
Side Effects
COA-verified vendors · trust score ≥70 required · single-vial price — bulk/bundle deals may be lower
Orforglipron
No pricing data yet.
Check Orforglipron prices →Semaglutide
COA corpus from Disclosed Labs — independently tested batches only.
Orforglipron
2
COAs
99.3%
Avg purity
2
Labs
Semaglutide
128
COAs
99.6%
Avg purity
13
Labs
ATTAIN-1 Phase 3 (n=3,127, non-diabetic obesity): mean body-weight change -11.2% with 36 mg at week 72 vs -2.1% placebo; ~59.6% of the 36 mg arm achieved ≥10% loss (Wharton et al., NEJM 2025). ATTAIN-2 (T2D obesity) and the ACHIEVE program (T2D glycemic control) were also positive. FDA approved April 1, 2026 as Foundayo under the Commissioner's National Priority Voucher program for adults with obesity or overweight with ≥1 weight-related comorbidity — the first oral small-molecule GLP-1 RA approved in the US.
Key references
The STEP program (STEP 1–8) showed average weight loss of roughly 15% of body weight over 68 weeks with weekly 2.4 mg semaglutide (STEP 1: Wilding et al., NEJM 2021, PMID 33567185). The SUSTAIN program established A1c and cardiovascular benefit in type 2 diabetes. The PIONEER program established efficacy of oral semaglutide (Rybelsus) versus placebo, sitagliptin, empagliflozin, and liraglutide (PIONEER 4, PMID 31186120). The SELECT trial (Lincoff et al., NEJM 2023, PMID 37952131) showed a 20% relative reduction in major adverse cardiovascular events in adults with overweight/obesity and established cardiovascular disease but without diabetes, leading to an expanded Wegovy indication.
Key references
Orforglipron and Semaglutide are both in the Metabolic category and may have overlapping mechanisms. Researchers should review both profiles carefully, understand the mechanisms of action, and monitor the relevant biomarkers when combining compounds in the same class. As always, consult a licensed healthcare provider before making any decisions about combining research compounds.
This platform provides informational tools only, not medical advice. This comparison is for educational purposes only. Consult a licensed provider.
Contraindications
Lab Testing
Disclosed Labs