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FDA approval · Eli Lilly · Endocrinology

Foundayoorforglipron

FDA approves a once-daily GLP-1 receptor agonist tablet for chronic weight management.

FDA approval · New molecule55-second read

Foundayoorforglipron

Eli Lilly · GLP-1 receptor agonist · Endocrinology

Bottom line for your patients

Adults who qualify for weight management therapy have a GLP-1 receptor agonist option taken as a daily tablet. It should not be combined with another GLP-1 receptor agonist.

Drug brief
Drug IQ
Who it is for
Adults with obesity, or adults with overweight in the presence of at least one weight-related comorbid condition, in combination with a reduced-calorie diet and increased physical activity.
What changes
The FDA describes it as a GLP-1 receptor partial agonist pill which does not need to be taken on an empty stomach. The supporting trials compared it with placebo.
The evidence
72 weeks of treatment, with a reduced calorie diet and increased physical activity, resulted in a statistically significant and clinically meaningful reduction in body weight compared with placebo. The FDA announcement does not report the size of the reduction.Placebo-controlled randomized trialTwo trials (not named in the FDA announcement)Randomized against placebo: shows that it works, not how it compares with existing treatments.
Watch for
Boxed warning for thyroid C-cell tumors; not for patients with a personal or family history of medullary thyroid cancer or with Multiple Endocrine Neoplasia syndrome type 2. Warnings include pancreatitis, severe gastrointestinal reactions, acute kidney injury due to volume depletion, hypoglycemia, and acute gallbladder disease; side effects include nausea, constipation, diarrhea, and vomiting.
How it is given
OralOnce-daily tablet; start at 0.8 mg, increase to 2.5 mg after at least 30 days and to 5.5 mg after another 30 days; may increase further to 9 mg, 14.5 mg, or 17.2 mg
What the approval tells you
New molecule. An active ingredient the FDA had not approved before.

Clinical summary

Foundayo is a GLP-1 receptor agonist tablet taken once daily, approved with a reduced-calorie diet and increased physical activity for adults with obesity, or with overweight and at least one weight-related comorbid condition. Two randomized, double-blind, placebo-controlled trials showed a statistically significant and clinically meaningful reduction in body weight versus placebo after 72 weeks; the FDA announcement does not give the figures. The labeling carries a boxed warning for thyroid C-cell tumors.

From the source 12

FDA press release

The FDA press release's own words, quoted exactly. Each line is what a claim on this page was checked against.

  1. April 01, 2026

    Backs · FDA action date 2026-04-01

  2. Foundayo is approved for use in combination with a reduced-calorie diet and increased physical activity to reduce excess body weight and maintain weight reduction long term in adults with obesity or adults with overweight in the presence of at least one weight-related comorbid condition.

    Backs · Approved use and population

  3. Foundayo is a glucagon-like peptide-1 (GLP-1) receptor agonist in tablet form that should be taken orally once daily.

    Backs · GLP-1 receptor agonist tablet, once daily

View all 12 lines
  1. Starting dosage is 0.8 mg, which should be increased to 2.5 mg after at least 30 days and then to 5.5 mg after another 30 days.

    Backs · Doses 0.8 mg, 2.5 mg, 5.5 mg and 30-day steps

  2. The dosage may be increased further to 9 mg, 14.5 mg, or 17.2 mg after at least 30 days at each level based on treatment response and tolerability.

    Backs · Doses 9 mg, 14.5 mg, 17.2 mg

  3. Two randomized, double-blind, placebo-controlled trials in adults with obesity or with overweight and one or more weight-related comorbidities supported the approval of Foundayo.

    Backs · Two randomized, double-blind, placebo-controlled trials

  4. In these trials, 72 weeks of treatment with Foundayo, in combination with a reduced calorie diet and increased physical activity, resulted in a statistically significant and clinically meaningful reduction in body weight in the Foundayo treated groups compared with the placebo group.

    Backs · 72 weeks; significant reduction in body weight versus placebo

  5. The labeling for Foundayo includes a boxed warning for thyroid C-cell tumors.

    Backs · Boxed warning

  6. Foundayo should not be used in patients with a personal or family history of medullary thyroid cancer or in patients with Multiple Endocrine Neoplasia syndrome type 2.

    Backs · MTC and MEN 2 restriction (type 2)

  7. It should not be used in combination with another GLP-1 receptor agonist.

    Backs · Not to be combined with another GLP-1 receptor agonist

  8. a GLP-1 receptor partial agonist pill which does not need to be taken on an empty stomach

    Backs · Does not need an empty stomach (comparator wording)

  9. Foundayo can cause side effects such as nausea, constipation, diarrhea, vomiting, dyspepsia, abdominal (stomach) pain, headache, abdominal extension, fatigue, burping, gastroesophageal reflux disease, gas, and hair loss.

    Backs · Side effects

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