What Is It, and Why Does It Matter?
Foundayo (orforglipron) is a once‑daily GLP-1 pill. It is intended for people with obesity, or overweight who also have weight-related health conditions (such as high blood pressure or type 2 diabetes). It is used along with a reduced-calorie diet and increased physical activity.
Unlike previous GLP-1 weight loss pills, Foundayo can be taken any time of day, with or without food or water.
Why Was It Approved?
Clinical data through 72 weeks shows that Foundayo 17.2 mg resulted in an average body weight reduction of 11% (25 lbs). Just over half of people (54.5%) without diabetes and roughly 45% of people with type 2 diabetes achieved at least a 10% weight loss. The study also tracked secondary endpoints, noting improvements in systolic blood pressure, waist circumference, and lipid profiles (specifically triglycerides and non-HDL cholesterol) compared to placebo.
Side Effects and Safety
The most common side effects are digestive, including nausea, diarrhea, and constipation. These usually happen while your body is getting used to the medicine. Headache, fatigue, belching, and hair loss were also reported. Like other GLP-1s, Foundayo carries a boxed warning for a possible risk of thyroid C‑cell tumors. Do not use it if you or a family member has had medullary thyroid carcinoma (MTC), or if you have multiple endocrine neoplasia syndrome type 2 (MEN 2). Acute pancreatitis has occurred. Stop the medicine and get medical help for severe stomach pain that spreads to your back. Foundayo lowers blood sugar and can cause hypoglycemia, especially when used with insulin or a sulfonylurea.
How Do I Take it?
You will take one tablet by mouth once daily, with or without food or water. Swallow the tablet whole; do not break, crush, or chew it. You will start at a low dose (0.8 mg) to help your stomach adjust. Every 30 days, your doctor will likely increase your dose until you reach the level that works best for you, up to a maximum of 17.2 mg. If you miss a dose, take it as soon as you remember, but do not take two doses at once. If you miss seven or more days in a row, restart the dose‑increase steps at a lower dose as directed by your health care provider.
What Should I Know About Foundayo?
Stop Foundayo and contact your health care provider right away for severe, ongoing belly pain that may move to your back, which can be a sign of pancreatitis. Seek help for dehydration from vomiting or diarrhea, trouble breathing, or swelling of your face or throat.
Foundayo can slow stomach emptying. Tell your surgical team you are taking Foundayo at least two weeks before any scheduled surgery, as it can affect anesthesia safety.
Low blood sugar can happen, especially if you also use insulin or a sulfonylurea. Learn the signs and reach out to your health care provider if they occur.
If you are pregnant or planning pregnancy, discuss potential risks; a pregnancy exposure registry is available. Because Foundayo slows down how fast your stomach empties, birth control pills may not be absorbed as well. If you use oral contraceptives, use a backup method (like condoms) for the first month of treatment and for 30 days after every dose increase.
Cost and Availability
Drugmaker Eli Lilly says prescriptions can be accepted right away through LillyDirect, with shipping starting April 6, 2026. Foundayo is expected to be available in U.S. pharmacies and telehealth providers soon after. Lilly has announced a savings card for eligible patients with commercial insurance to pay as little as $25 per month, with a self-pay option starting at $149 for the starting dose.