If you're thinking about starting Foundayo, or you've recently begun treatment, you may be wondering whether it's likely to cause side effects.
Like all medicines, Foundayo can cause side effects in some people, but understanding what to expect can help you feel more confident about your treatment.
In this guide, we'll walk you through the most common Foundayo side effects, explain when they might happen, and share practical advice on managing them. We'll also cover the symptoms that shouldn't be ignored and when to speak to a healthcare professional.
Three key takeaways
Most Foundayo side effects are mild and tend to improve as your body gets used to treatment.
Digestive symptoms like nausea, diarrhoea and constipation are the most commonly reported side effects.
Chemist4U offers many over-the counter medications to help manage common side effects.
What are the most common Foundayo side effects?
Like other GLP-1 medicines used for weight management, Foundayo's most common side effects tend to affect the digestive system.
The most commonly reported side effects (may affect more than 1 in 10 people) are:
Experiencing one or more of these side effects doesn’t necessarily mean Foundayo isn’t for you. However, if any side effects become severe, affect your day-to-day life, or do not improve, you should speak to your prescriber or pharmacist for advice.
If you experience side effects while taking Foundayo, they're most likely to happen when you first start treatment or after your dose is increased. This is because your body needs time to adjust to the medicine and the way it affects appetite and digestion.
Foundayo is started at a lower dose and gradually increased over time to help your body adjust to treatment. Following the recommended Foundayo dosing schedule can help reduce the likelihood of digestive side effects and make treatment more comfortable.
How long do Foundayo side effects last?
The amount of time side effects last can vary from person to person, though they are often temporary.
If side effects are mild, they may improve within a few days or weeks as your body adjusts to the medication.
This is backed up by clinical studies, which found that side effects tended to decrease over time as patients continued treatment.
Common Foundayo side effects
Some people taking Foundayo may experience other side effects that, while less frequent, are still relatively common.
These side effects may affect up to 1 in 10 people taking the medication, and include:
Similarly, these side effects are most likely to happen when starting treatment or increasing in dose. They’re also often quite mild and improve with time, however, if any are longer lasting, or causing you any concern then you should speak to your pharmacist for more advice.
Uncommon Foundayo side effects
Uncommon side effects are those that may affect up to 1 in 100 people taking Foundayo, and may include:
changes in taste
increased heart rate
low blood pressure
gallstones
While these side effects are reported less often than digestive symptoms like nausea or diarrhoea, it's still important to know about them while taking the medication.
Serious Foundayo side effects
Serious side effects can occur with Foundayo, but they're very uncommon. Most people taking the medication won't experience any of the problems listed below.
Pancreatitis (inflammation of the pancreas)
Although rare, Foundayo can cause pancreatitis. This is a condition that requires immediate medical attention. Symptoms can include:
severe pain in the stomach that may spread to your back
pain that doesn't go away
feeling or being sick
Stop taking Foundayo and seek urgent medical advice if you develop these symptoms.
Gallbladder problems
Gallstones and other gallbladder problems have been reported in some people taking Foundayo. Contact a healthcare professional if you develop:
pain in the upper right side of your abdomen
fever
yellowing of the skin or whites of the eyes (jaundice)
pale or clay-coloured stools
Severe allergic reactions
In rare cases, some people may experience a serious allergic reaction after taking Foundayo. Seek emergency medical help if you notice:
difficulty breathing
wheezing
swelling of the face, lips, tongue or throat
feeling faint or dizzy
a rapid heartbeat
When to seek medical advice
Most Foundayo side effects are mild and can be managed at home. However, you should speak to your prescriber, pharmacist or GP if side effects:
are persistent
become difficult to manage
start to affect your daily life
Additionally, if you experience any of the serious side effects listed above, stop taking Foundayo and seek medical advice straight away.
Are there long-term side effects of taking Foundayo?
At the moment, no long-term side effects have been identified with Foundayo. While the medication is still relatively new, the evidence available so far is reassuring and suggests that side effects don't become more severe or more common the longer you take it.
In the 72-week ATTAIN-1 clinical trial, researchers monitored more than 3,000 adults taking oral orforglipron, the active ingredient in Foundayo. They did not identify any new side effects linked to longer-term use, and most reported side effects were mild to moderate in severity.
Are Foundayo side effects similar to other GLP-1 treatments?
“The side effects reported with Foundayo are very similar to those seen with other GLP-1 weight loss treatments, including Wegovy and Mounjaro.
“This is because they work in a similar way, helping to regulate appetite and slow down how quickly food leaves the stomach. As a result, digestive side effects are commonly reported across this group of medicines.
“If you've previously used another GLP-1 medication and experienced side effects, it doesn't automatically mean you'll have the same experience with Foundayo.
“Likewise, if this is your first GLP-1 treatment, it's worth remembering that side effects are often temporary and may improve as your body gets used to the medication.”
How to manage the most common Foundayo side effects
While not everyone experiences side effects, there are a few simple steps that can help make symptoms more manageable and support you while adjusting to the medication.
Eat smaller meals more often: Large meals can sometimes make digestive symptoms feel worse. Eating smaller portions throughout the day may help reduce feelings of nausea, bloating, indigestion, stomach discomfort and vomiting.
Eat slowly and stop when you feel full: Foundayo works by helping you feel fuller for longer. Eating too quickly or continuing to eat when you're already full may increase nausea, indigestion and stomach discomfort.
Stay hydrated throughout the day: Drinking plenty of fluids can help replace water lost through diarrhoea or vomiting and reduce the risk of dehydration. If you're experiencing diarrhoea, taking small, regular sips may be more comfortable than drinking large amounts at once.
Increase your fibre intake gradually if you're constipated: Foods like fruit, vegetables, beans and wholegrains can help keep your bowels moving. It's important to increase fibre gradually and drink plenty of water, as adding too much fibre too quickly may worsen bloating.
How Chemist4U can help with any Foundayo side effects
Most Foundayo side effects can be managed with simple lifestyle changes, but sometimes a little extra support can make a big difference.
At Chemist4U, we stock a range of over-the-counter treatments that may help with common digestive side effects, including:
Heartburn or indigestion: Gaviscon Advance helps stop stomach acid travelling up into the throat, while Nexium Control can reduce the amount of acid your stomach produces.
Bloating or trapped wind: Wind-Eze and Rennie Deflatine can help ease bloating, wind and stomach discomfort.
Diarrhoea: Imodium (loperamide) can help slow down bowel movements and provide short-term relief from diarrhoea.
Constipation: Movicol or CosmoCol can soften stools and make bowel movements easier.
If you're unsure whether a symptom is related to Foundayo, need advice on managing side effects, or want to know which products may be right for you, our pharmacists are here to help.
Frequently asked questions about Foundayo side effects
What should I do if I throw up after taking my Foundayo tablet?
If you're sick after taking Foundayo, do not take another tablet to replace the dose. Simply take your next dose at the usual time the following day.
Does Foundayo cause hair loss?
Hair thinning or hair loss can occur while taking Foundayo, although it is not one of the most common side effects. In many cases, hair loss is thought to be linked to rapid weight loss rather than the medication itself.
What foods should I avoid on Foundayo?
There are no foods that you must avoid while taking Foundayo. However, many people find that fatty, fried, spicy, or very large meals can make digestive side effects like nausea, bloating, and indigestion worse.
Which has fewer side effects, Foundayo or the Wegovy pill?
Neither Founday or the Wegovy pill has been shown to have consistently fewer side effects than the other.
Because both medicines work in a similar way, they have similar side effect profiles, including nausea, vomiting, diarrhoea, constipation and stomach discomfort.
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