What is Foundayo (Orforglipron) & how does it work

Thursday, November 5, 2026

Foundayo is the brand name for Orforglipron, a once-daily prescription weight management tablet made by pharmaceutical company Eli Lilly.

Like weight loss injections, the medicine works by acting on GLP-1 receptors involved in appetite and food intake. It can help you feel less hungry, eat less and lose weight (2). But unlike injections, Foundayo is swallowed as a convenient daily pill, taken at any time of day (1,2).

Here, we explain more about what Foundayo is, what changes it makes in the body, and how these effects work to support weight loss.

Start your online consultation or learn more about Foundayo for weight management.

In this article:

What is Foundayo?
Is Foundayo the same as Orforglipron?
When did Foundayo (Orforglipron) come out?
Is Foundayo (Orforglipron) approved in the UK?
What is Foundayo (Orforglipron) used for?
How does Foundayo (Orforglipron) work?
Is Foundayo right for you?

What is Foundayo?

Foundayo is a prescription-only GLP-1 weight loss tablet containing the medicine Orforglipron (pronounced or-for-GLIP-ron).

Like other GLP-1 receptor agonists, Foundayo copies the effects of glucagon-like peptide-1 (GLP-1), a hormone naturally released after eating to help regulate your appetite, fullness, digestion and blood sugar levels. These effects support steady, gradual weight loss (2).

The main difference between Foundayo and other GLP-1 medicines like the Wegovy Pill is the chemical structure. Orforglipron is a small-molecule, non-peptide GLP-1 receptor agonist, whereas medicines such as Semaglutide and Tirzepatide are peptide-based (2,4).

The unique chemical structure allows Foundayo to be taken as a standard, once-daily tablet, taken at any time of day (1,2). All other GLP-1 medicines either come as in injection pen or, in the case of the Wegovy Pill, have strict instructions and restrictions around food and drink.

Foundayo is therefore a flexible, convenient option for many people who want the benefits of a GLP-1 medicine in a standard tablet.

Is Foundayo the same as Orforglipron?

Yes, Orforglipron is the active ingredient, meaning it is the medicine within the tablet that causes the effects in the body. Foundayo is simply the brand name for the Orforglipron-containing tablets.

This is similar to Semaglutide being the active ingredient in medicines sold under brand names such as Wegovy, or Tirzepatide being the active ingredient in Mounjaro. You may see the medicine described as Foundayo, Orforglipron or Foundayo (Orforglipron).

Brand names can vary between products or countries and may change over time, while Orforglipron remains the name of the active medicine itself. In the UK, Foundayo is the current licensed brand name for the Orforglipron tablets discussed in this article (2).

When did Foundayo (Orforglipron) come out?

Orforglipron was first FDA-approved in the United States on 1 April 2026 (4). The MHRA then officially approved Foundayo for weight management in the UK on 10 August 2026, making the UK the first European country to approve Orforglipron (1).

Foundayo is now available in the UK on private prescription to eligible patients who meet the prescribing criteria for weight management treatment. UK pharmacies began offering Foundayo privately around two weeks after MHRA approval (3).

Is Foundayo (Orforglipron) approved in the UK?

Yes, Foundayo is approved in the UK for weight management in eligible adults (1,2). It also has a separate UK licence for treating type 2 diabetes, but Oxford Online Pharmacy provides Foundayo for weight management only.

As a weight loss treatment, Foundayo is licensed alongside a reduced-calorie diet and increased physical activity for adults who have:

a BMI of 30 or above, OR
a BMI of 27 or more and at least one weight-related health condition, such as high blood pressure, abnormal cholesterol levels, obstructive sleep apnoea, cardiovascular disease, prediabetes or type 2 diabetes (1,2).

Being within these BMI ranges does not automatically mean you qualify for weight loss treatment. Getting Foundayo in the UK requires a prescription and a clinical assessment so a prescriber can check whether treatment is suitable for you.

At the time of writing, Foundayo is not currently approved on the NHS for weight management (1). NICE is assessing Orforglipron for managing overweight and obesity and is expected to publish its decision in January 2027, so NHS availability may change in the future (5).

What is Foundayo (Orforglipron) used for?

Foundayo is used for both weight loss and long-term weight maintenance in eligible adults (1,2).

Foundayo for weight loss

In clinical trials, people taking the equivalent of the highest licensed Foundayo dose lost an average of 12.4% of their starting body weight after 72 weeks (2,6).

The trial used an earlier capsule formulation, so the milligram doses were different from the Foundayo tablets prescribed today. However, the licensed tablet doses were developed to provide an equivalent effect, meaning the trial results can be used to estimate how effective Foundayo may be.

At the highest dose studied, around (2,6):

6 in 10 people lost at least 10% of their starting weight
4 in 10 lost at least 15%
1 in 5 lost at least 20%

These are trial averages, so your own weight loss with Foundayo may be higher or lower.

Foundayo is designed to be used alongside a reduced-calorie diet and increased physical activity, and making lifestyle changes may help you get more from treatment (1,2).

Foundayo for weight maintenance

Foundayo can also be used to help maintain weight loss over the longer term, which may be relevant if you have already lost weight using another GLP-1 medicine.

For many, keeping weight off is as hard as losing it in the first place. Weight regain is common, with people gaining around 0.4kg per month on average after treatment ended (7). Some people choose to use medication long term for this reason.

For people using treatments like Mounjaro and Wegovy injections, continuing treatment meant continuing with injections. Foundayo weight loss pills are an alternative to injections for people who would prefer to take a tablet to help maintain their weight.

In the ATTAIN-MAINTAIN clinical study, people who lost weight using injectable GLP-1 treatments were switched to oral Orforglipron for a further year:

People who switched from Semaglutide kept off around 86% of their previous weight loss over the following year, with an average regain of just 0.9kg (8).
People switching from Tirzepatide kept off around 74% of their previous weight loss, with an average regain of around 5kg (8).

Based on this clinical study, Foundayo may provide another option for people who prefer to continue their long-term weight management with a daily tablet.

How does Foundayo (Orforglipron) work?

Foundayo works by binding to and activating GLP-1 receptors in the body, which affects your appetite, food intake and digestion (2).

These effects build gradually, so don’t expect immediate weight loss when starting a GLP-1. Foundayo dosing starts at a low tablet strength and increases step by step, with at least 30 days at each dose (2). You may notice changes in your appetite and cravings before you start to lose weight.

Weight loss usually develops gradually over weeks and months as these changes make it easier to consistently eat fewer calories. In clinical trials, people continued to lose weight over many months of treatment rather than reaching their final weight loss within the first few weeks (2,6).

Foundayo reduces your appetite

GLP-1 receptors are found in areas of the brain that help regulate hunger and food intake. Foundayo activates these receptors, which can reduce appetite and make it easier to eat smaller amounts (1,2).

Feeling some hunger on a GLP-1 between meals is normal, but you may notice that you:

Feel less hungry between meals
Feel satisfied with smaller portions
Find it easier to stop eating when you are full

Together, these changes make it easier to eat less and support weight loss.

Foundayo helps you feel fuller for longer

Foundayo slows how quickly food leaves your stomach, known as delayed gastric emptying (2).

GLP-1 receptors are found in the gut and on nerves that link your digestive system and the brain. When Foundayo activates these receptors, it reduces the contractions that normally push food through the digestive system, so the stomach empties more slowly.

This can help you feel full for longer after eating, but it’s these same effects in the gut that contribute to many of the common side effects of Foundayo like nausea, vomiting, and diarrhoea (2).

Foundayo may reduce food cravings

Foundayo may also help reduce food cravings and the urge to eat for pleasure rather than hunger.

GLP-1 receptors in the brain are involved not only in appetite, but also in brain pathways linked to reward and food motivation. Research suggests Orforglipron can act on these pathways, which may reduce the pull of cravings and make food feel less tempting (9).

Some people may notice that they:

Think about food less often
Experience fewer cravings
Snack less between meals
Want high-calorie or sugary food less often
Find it easier to resist foods they would usually find difficult to avoid

These effects work alongside changes to hunger and fullness to help lower overall calorie intake.

Having fewer cravings may also make it easier to make more deliberate, healthier food choices. Choosing meals with plenty of protein and fibre, for example, can help you feel fuller for longer than relying on foods that are high in calories but less filling or nutritious.

Foundayo helps control blood sugar

Foundayo also helps your body control blood sugar more effectively.

Activating GLP-1 has effects on insulin and glucagon, two hormones involved in blood sugar control. Foundayo increases insulin release when blood sugar is high, reduces glucagon and improves how well your body responds to insulin, helping to keep blood sugar levels more stable (2).

Keeping blood sugar more stable may help some people avoid the hunger and cravings that can follow sharp rises and falls in blood sugar, especially people with diabetes or pre-diabetes. Although Foundayo's weight-loss effects are thought to come mainly from reduced appetite and food intake.

Is Foundayo right for you?

Foundayo is one of several prescription weight loss treatments available in the UK, including other oral and injectable GLP-1 medications.

If you prefer a tablet, Foundayo may be one option to consider. The most suitable treatment will depend on your medical history, current medicines, previous weight loss treatment, side effects, personal preferences, and cost of Foundayo compared with other options.

At Oxford Online Pharmacy, a UK-registered prescriber will assess whether Foundayo is safe and suitable for you before treatment is supplied. If another weight loss treatment is more appropriate, they can help you consider the alternatives available through the service.