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In April 2026, the US Food and Drug Administration approved a once-daily pill called Foundayo (orforglipron) for adults with obesity or adults who are overweight and have at least one health condition related to weight.

Foundayo is a small-molecule glucagon-like peptide-1 (GLP-1) receptor agonist that reduces hunger and slows stomach emptying. Because it is a pill rather than an injection, it may be simpler to take than some other GLP-1 drugs.

This guide explains how the Foundayo dosing schedule works, why gradual dose increases matter, and what to expect when taking this medicine.

Summary points

  • The dosing schedule starts at 0.8 mg daily and increases every 30 days if tolerated. The maximum approved dose is 17.2 mg.
  • Slow dose escalation reduces stomach-related side effects.
  • Take one tablet daily, swallow it whole, and take it at a consistent time with or without food.
  • Avoid use if you have a personal or family history of thyroid cancer, are pregnant, or are under 18 years of age.
  • Interactions with certain drugs are important. Discuss all medications with your provider, especially CYP3A4 inhibitors or inducers and simvastatin.

The step-up dosing schedule of Foundayo

Foundayo comes in six tablet strengths:

    • 0.8 mg
    • 2.5 mg
    • 5.5 mg
    • 9 mg
    • 14.5 mg
    • 17.2 mg

The starting dose is 0.8 mg once daily. Your prescriber will increase the amount in stages if you tolerate each level. The standard schedule from the FDA-approved label and consumer references is summarized in the table below. Each step lasts at least 30 days.

Step Tablet strength When to increase
Step 1 0.8 mg once daily Start here and continue for at least 30 days
Step 2 2.5 mg once daily After at least 30 days on 0.8 mg
Step 3 5.5 mg once daily After at least 30 days on 2.5 mg
Step 4 9 mg once daily After at least 30 days on 5.5 mg if additional weight loss is needed and the medicine is well tolerated
Step 5 14.5 mg once daily After at least 30 days on 9 mg if further dose escalation is appropriate
Step 6 17.2 mg once daily After at least 30 days on 14.5 mg; this is the maximum dose

Always follow the schedule provided by your healthcare provider. In some situations, your provider may choose not to move to the next step or may adjust the dose more slowly.

For example, if you are taking medications that raise orforglipron levels (strong CYP3A4 inhibitors), the maximum dose is reduced to 9 mg once daily. On the other hand, certain drugs can lower orforglipron levels. Your doctor may need to monitor its effect and increase the dose if necessary.

Tips for taking each dose

  • Take the tablet once a day. Choose a consistent time that fits your routine. Morning or evening are both acceptable. Do not take more than one tablet per day.
  • Swallow the tablet whole. Do not break, crush, or chew it. It is designed to release the drug gradually in your gut.
  • Food is optional. You can take Foundayo with or without food. There are no specific water or fasting requirements. This makes it more convenient than some other oral GLP-1 medications.
  • Stay on each level for at least a month. Moving up too quickly increases the risk of nausea, vomiting, and diarrhea.
  • Do not combine with other GLP-1 medications. Using more than one GLP-1 drug at the same time can increase side effects. Foundayo should not be used with injections like liraglutide (Saxenda) or semaglutide (Ozempic, Wegovy).

Missed dose guidance

Missing a dose occasionally is common. Here’s what you need to do:

    • Take the missed tablet as soon as you remember. If it is close to your next scheduled dose, skip the missed one.
    • Never take two doses at once. Doubling up can increase side effects such as nausea and vomiting.
    • Seven or more missed doses. If you have not taken the medicine for seven days or more, contact your healthcare provider. The dosing schedule may need to start again at a lower strength to reduce gastrointestinal side effects.

Storage and handling

Store Foundayo tablets at room temperature between 20 °C and 25 °C (68 °F to 77 °F). Keep tablets in their original bottle and carton to protect them from light and replace the cap after each use. Keep out of reach of children.

Common and serious side effects to watch out for

Most people experience some digestive symptoms when they start or increase their dose. According to the prescribing information, the most common adverse reactions reported in at least 5% of patients include:

    • nausea
    • constipation
    • diarrhea
    • vomiting
    • dyspepsia (indigestion)
    • abdominal pain
    • headache
    • abdominal distension
    • fatigue
    • belching
    • acid reflux
    • flatulence
    • hair loss

Many of these effects improve as your body adjusts. Taking the medicine at the same time each day and staying hydrated can help.

Foundayo can also cause more serious problems. The FDA highlights several warnings:

    • Pancreatitis. Cases of acute pancreatitis, including life-threatening forms, have been reported with GLP-1 drugs. Severe abdominal pain that radiates to the back with or without nausea and vomiting requires immediate medical evaluation.
    • Severe stomach reactions. Some people experience prolonged vomiting or severe stomach pain. Contact your doctor if symptoms persist.
    • Acute kidney injury. Fluid loss from vomiting or diarrhea can lead to dehydration and kidney injury. Drink plenty of fluids and seek care if you cannot keep liquids down.
    • Low blood sugar (hypoglycemia). This is especially a concern when Foundayo is taken with insulin or sulfonylurea medicines. Symptoms may include dizziness, blurred vision, sweating, shaking, or weakness.
    • Gallbladder problems. Some users have developed cholecystitis or gallstones. Signs include upper abdominal pain, yellowing of the skin or eyes, and clay-colored stools.
    • Serious allergic reactions. Swelling of the face or throat, difficulty breathing, rash, or fast heartbeat are reasons to seek emergency care.

Interaction with other medicines

Foundayo can interact with many medications. The label advises avoiding strong CYP3A4 inhibitors (certain antifungals and antibiotics) because they increase orforglipron levels. If these medicines must be used, the Foundayo dose should not exceed 9 mg once daily.

Strong CYP3A4 inducers, such as rifampin or carbamazepine, can lower orforglipron levels and should be avoided. Moderate inducers may require careful monitoring and possible dose adjustments.

Foundayo can also raise simvastatin levels. People taking simvastatin should not exceed 20 mg per day. Because the medicine delays stomach emptying, it may affect the absorption of other oral medications.

Always inform your doctor and pharmacist about all prescription and over-the-counter drugs, vitamins, and supplements before starting Foundayo.

Who should not take Foundayo?

Foundayo is not appropriate for everyone. The prescribing information and expert articles list specific situations where the medicine should be avoided or used with caution:

  • Personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia type 2. Foundayo carries a boxed warning about thyroid C-cell tumors. It is contraindicated in people with a personal or family history of MTC or in those diagnosed with MEN 2.
  • Pregnancy and reproductive planning. Foundayo may cause harm to a developing fetus and should not be taken during pregnancy. If you become pregnant while taking the medicine, stop it and contact your healthcare provider immediately. The FDA advises that women using oral contraceptives switch to a non-oral or barrier method for 30 days after starting Foundayo and for 30 days after each dose increase because orforglipron can reduce absorption of birth control pills.
  • Breastfeeding. There is little information about orforglipron in breast milk. Discuss with your provider if you are nursing.
  • Severe hepatic impairment. The medicine is not recommended for people with severe liver disease.
  • Children and adolescents. For now, Foundayo is approved only for adults. Clinical studies have not evaluated its safety or effectiveness in children.
  • Other medical conditions. Use caution if you have severe gastroparesis, a history of pancreatitis, kidney problems, or gallbladder disease. These conditions can worsen with GLP-1 therapy, and the label warns of the risk of acute pancreatitis, severe stomach reactions, acute kidney injury, and gallbladder disease.
  • Use with insulin or sulfonylureas. Combining Foundayo with insulin or drugs that increase insulin secretion can raise the risk of low blood sugar. Your doctor may need to adjust the doses of those medications.

Bottom line

Foundayo offers a new oral option for adults seeking long-term weight management. By following the prescribed step-up schedule, taking one tablet per day, monitoring side effects, and combining the medication with healthier eating and activity, many people can lose weight over time.

Because the medicine can interact with other drugs and carries important safety warnings, it is essential to work closely with your doctor. Foundayo is not a quick fix, but when used as part of a comprehensive plan, it can be a helpful tool on the road to better health.

Frequently Asked Questions

Take Foundayo once daily by mouth, with or without food. Swallow the tablet whole, and do not break, crush, chew, or take more than one tablet per day.

Foundayo starts at 0.8 mg once daily, then increases to 2.5 mg after at least 30 days. After another 30 days, the dose increases to 5.5 mg, then may move up to 9 mg, 14.5 mg, and 17.2 mg if needed and tolerated.

The retail price of a 30-day supply of Foundayo starts at $649 per month. You can also get Foundayo for $149 to $349 per month through the LillyDirect program. Eligible people with commercial insurance may pay as little as $25 per month.

Yes. Foundayo can be taken at any time of day, including at night, as long as you take it once daily and stay consistent.

Some people may notice appetite changes within the first few weeks, but weight loss usually builds gradually. In studies, some participants started losing weight in the first month, with larger changes developing over months of continued treatment.

Yes. Foundayo can lower blood sugar, and the risk of low blood sugar is higher when it is used with insulin or sulfonylureas. People with diabetes should ask their prescriber whether any medication adjustments are needed.

Foundayo may reduce frequent thoughts about food because it acts on GLP-1 pathways that affect appetite and fullness.

Yes, there is no official rule that says you must avoid coffee while taking Foundayo. Since nausea, reflux, and stomach upset can happen with Foundayo, some people may feel better limiting coffee if it worsens those symptoms.

Sources

Office of the Commissioner. (2026, April 1). FDA approves first new molecular entity under National Priority Voucher Program. U.S. Food And Drug Administration. https://www.fda.gov/news-events/press-announcements/fda-approves-first-new-molecular-entity-under-national-priority-voucher-program

Foundayo Cost Information | With or Without Insurance | FoundayoTM (orforglipron) tablets. (n.d.). https://pricinginfo.lilly.com/foundayo

HIGHLIGHTS OF PRESCRIBING INFORMATION OF FOUNDAYO. https://pi.lilly.com/us/foundayo-uspi.pdf