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| Fact Table | |
|---|---|
| Formula | C48H47F2N10O5·0.5Ca (tablet API); active moiety: C48H48F2N10O5 |
| License | FDA approved (U.S., April 1, 2026) |
| Bioavailability | 77% absolute oral bioavailability (0.8 mg dose); no clinically relevant food effect |
| Legal status | Prescription only (Rx-only, U.S.) |
| Chemical Name | calcium bis{3-[(1S,2S)-1-({2-(4-fluoro-3,5-dimethylphenyl)-3-({3-[3-(4-fluoro-1-methyl-1H-indazol-5-yl)-2-oxo-2,3-dihydro-1H-imidazol-1-yl]-4-methyl-2,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5-yl}carbonyl)-5-[(4S)-2,2-dimethyloxan-4-yl]-1H-indol-1-yl}-2-methylcyclopropyl]-5-oxo-1,2,4-oxadiazol-4(5H)-ide} |
| Elimination half-life | ~29–49 hours |
| Dosage (Strength) | 0.8 mg, 2.5 mg, 5.5 mg, 9 mg, 14.5 mg, and 17.2 mg oral tablets; start 0.8 mg once daily, titrate at =30-day intervals; max 17.2 mg once daily |
| Pregnancy | Weight loss offers no benefit in pregnancy and may cause fetal harm; discontinue when pregnancy is recognized |
| Brands | Foundayo (Eli Lilly) |
| Protein binding | >99% |
| PubChem CID | 137319706 |
| MedlinePlus | N/A |
| ChEBI | 747472 |
| ATC code | A10BJ (GLP-1 receptor agonists class) |
| DrugBank | DB18964 |
| KEGG | D12536 |
| Routes of administration | By mouth (oral tablets) |
Foundayo (orforglipron) is a prescription weight management medication taken orally once per day. It is intended for adult patients living with obesity, or for adults who are overweight and have a diagnosed weight-related medical condition, including type 2 diabetes, high blood pressure, or high cholesterol. Foundayo is used together with dietary changes and a more active lifestyle as part of a comprehensive weight management plan.
The active ingredient, orforglipron, works as a GLP-1 receptor agonist. GLP-1 is a hormone the body releases naturally in response to eating. Foundayo mimics this hormone, signaling the brain to reduce hunger, helping the body feel full sooner, and slowing the movement of food through the digestive tract. The combined result is a meaningful reduction in calorie consumption that supports gradual, sustained weight loss.
Foundayo is formulated as a small-molecule oral tablet. This allows it to be absorbed effectively without the dietary restrictions or timing requirements associated with other oral medications in its class. Patients can take it at any time of day, before or after eating, without any fluid limitations.
Foundayo is initiated at a dose of 0.8 mg once daily and increased in a stepwise fashion over time, with each dose increase occurring no sooner than 30 days apart. The highest available dose is 17.2 mg once daily, reached only if lower doses are well tolerated and additional efficacy is needed.
Take one tablet by mouth each day at a consistent time. Swallow tablets whole. Do not crush, split, or chew them before swallowing. Foundayo has no requirements around food intake or fluid consumption and can be taken at any point in the day regardless of meals.
In the event of a missed dose, take it as soon as it is remembered within that day. Never double up by taking two doses on the same day. If you go seven or more days without taking the medication, contact your prescribing doctor for guidance before starting again.
Foundayo's active ingredient is orforglipron.
Additional inactive ingredients that make up the tablet formulation include copovidone, crospovidone, magnesium stearate, microcrystalline cellulose, and anhydrous sodium carbonate. The outer film coating consists of polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide.
Foundayo is not suitable for patients with a personal or family history of medullary thyroid carcinoma (MTC), nor for those diagnosed with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).
This medication must not be used by anyone who has experienced a serious allergic reaction to orforglipron or to any of the other components found in the tablet.
Prior to beginning treatment, let your doctor know if you have ever been diagnosed with or treated for pancreatitis, kidney disease, liver impairment, gastroparesis or other significant stomach motility issues, or complications related to diabetic retinopathy.
Women taking oral contraceptives should note that Foundayo may interfere with their effectiveness. A backup or alternative contraceptive method is typically recommended for the first 30 days of treatment and for 30 days after any dose increase.
Foundayo is not considered safe for use during pregnancy and is not recommended for women who are breastfeeding. Provide your healthcare provider with a thorough account of your medical history, existing medications, and any allergies prior to starting this prescription.
Patients taking Foundayo most frequently report nausea, stomach discomfort, heartburn, constipation, diarrhea, bloating, excess gas, vomiting, indigestion, belching, headaches, fatigue, and temporary hair loss as the most commonly experienced side effects.
Potential serious side effects include pancreatitis, complications involving the gallbladder, kidney injury, low blood sugar in patients also using other glucose-lowering medications, severe allergic reactions, and vision changes in those with type 2 diabetes.
Discontinue use and contact a healthcare provider immediately if you experience intense or ongoing abdominal pain, any indication of an allergic reaction, or any other unexpected or worsening symptoms. The side effects listed here do not account for every possible reaction associated with this medication.