Foundayo Reviews (2026): Real Experiences, Weight Loss Results and Side Effects
Quick Answer
Foundayo reviews tell a genuinely mixed story. Many users describe a marked drop in appetite and "food noise", sometimes from the very first 0.8mg dose, alongside weight loss that varies considerably from person to person. Others feel almost nothing at the starter doses and only notice a difference once they move higher. Nausea, reflux, constipation and fatigue are the most commonly reported downsides. Foundayo currently has an average rating of 7.1 out of 10 from 33 weight-loss reviews on Drugs.com (checked 21 August 2026), with 55% of reviewers reporting a positive experience and 12% a negative one. That's a useful early signal, but with so few reviews so far, it's the individual stories behind the number that matter most.
The user comments included in this article come from public online forums and reflect individual experiences. They should not be interpreted as typical results or clinical evidence. Responses to treatment can vary, and medical decisions should be made with a qualified healthcare professional.
What Real Foundayo Reviews Actually Show
When people search "Foundayo reviews", they're rarely after a clinical trial summary. What they want is simpler: what does taking this pill actually feel like?
The early wave of user experiences answers that better than any spec sheet can. One reviewer, just two weeks into 0.8mg, described the change like this:
"So much more mental space to think about other things... anxiety around food has basically left the chat." -u/Evening-Shower-2788, r/FoundayoUS, 0.8mg, 2 weeks in
That's a striking thing to say about a tablet. But set it against this, from a reviewer who'd already been through two full titration steps with nothing to show for it:
"No weight loss, no side effects... trying to remain optimistic." -u/loveshoes1, r/FoundayoUS, 0.8mg then 2.5mg, 2 months in
Both of these are genuine Foundayo reviews. Neither is wrong. What explains the gap is usually one of three things: whether someone is new to GLP-1 medicines or switching from an injectable, which dose they've reached, and how long they've been taking it. Keep that in mind as you read through the rest of this article; it explains most of what looks like contradiction.
How We Analysed These Foundayo Reviews
Medino reviewed a wide collection of public discussions and first-hand accounts about Foundayo, alongside the 33 weight-loss reviews currently on Drugs.com, grouped by recurring theme: appetite and food noise, weight loss, starter-dose response, side effects, switching from another GLP-1 medicine, and maintenance.
A few limits are worth flagging honestly. These accounts are self-reported and not medically verified. Foundayo has only been available for a few months, so most reviews cover early weeks rather than a full course of treatment, and a good share of the discussion comes from US users, whose insurance and pricing context doesn't carry over here. Where it matters, we've focused on what the experience itself tells us rather than the US healthcare backdrop around it.
Positive Foundayo Reviews
"I Just Don't Think About Food": Food Noise and Appetite
The strongest, most consistent positive theme in Foundayo reviews isn't the number on the scale. It's food noise: the constant background chatter of thinking about food, cravings and what to eat next, going quiet.
Alongside the "mental space" review above, another user described the shift in more concrete terms. Chocolate that used to be irresistible, they said, suddenly did:
"Nothing for me." -u/tababnaba76, r/FoundayoPill
Later, in an update on maintenance, the same reviewer described what changed at a restaurant: a bite of bread, part of a shared appetiser, half a risotto, leftovers taken home:
"Not bc i forced myself to." -u/tababnaba76, r/FoundayoUS, 1st month of maintenance
That's a small phrase, but it says a lot. For someone who'd previously either overeaten at social events or forced themselves to barely eat at all, being able to simply stop was the headline result, not the pounds lost.
Another reviewer described a shift that had nothing to do with willpower. One woman (u/inh-exh, r/FoundayoUS) wrote that she'd made herself a piece of toast for the first time in eighteen years of living in the same house, something she'd never previously allowed herself. These are subjective, personal accounts, and they shouldn't be read as evidence Foundayo treats anxiety or any diagnosed condition; it isn't approved or evidenced for that. Across these positive reviews, having more mental space for something other than food sometimes mattered more to the reviewer than the number on the scale.
Pharmacist insight: "People can respond quite differently to Foundayo, particularly during the early stages of treatment. Some may experience reduced appetite or fewer thoughts about food quite quickly, while others may notice very little at first. Not feeling a strong effect straight away doesn’t necessarily mean the treatment won’t work for you, and it’s important to follow the prescribed dose-escalation schedule rather than increasing the dose early." -Alessandro Grenci, Superintendent Pharmacist at medino
Weight Loss: Real, But Rarely Uniform
Weight-loss reviews range from modest to substantial, and the pace varies enormously. Outcomes vary between individuals, and statements about rapid weight loss should not be seen as typical.
One reviewer, 47 and previously active, described losing 25lb over eleven weeks, moving from 0.8mg up to 9mg alongside a structured gym routine of cardio and strength work. What stood out in their account wasn't the number, but how little thought it took:
"I just eat smaller amounts without thinking about it." -u/lookmanolurker, r/FoundayoPill, 0.8mg to 9mg over 11 weeks
Another reviewer described a similar shift in how hunger and fullness worked for them, after eighteen pounds lost in six weeks on 0.8mg alone:
"Foundayo solved that for me." -u/LiftingCode, r/FoundayoPill, 0.8mg, 6 weeks
On Drugs.com, one reviewer on the starter dose reported losing 12lb in the first month with "zero cravings and zero food noise," after a rough first few days of nausea. Another, four months in and now on 14.5mg, had lost 27lb with fatigue as their only side effect.
Not every weight-loss story is this smooth. Several reviewers reported rapid losses in the first week, six or seven pounds in a matter of days, which is worth treating with caution rather than excitement; scale weight can shift quickly for reasons that have little to do with fat loss, and tends to settle once the body adjusts.
The clinical evidence gives a far steadier benchmark than any individual review can. In the pivotal ATTAIN-1 trial, people taking the highest studied dose of Foundayo lost an average of 11.2% of their starting body weight over 72 weeks, against 2.1% on placebo, with lower studied doses averaging 7.5% and 8.4%. That's a 72-week average across more than 3,000 people. Most of the reviews above cover a few weeks to a few months, so they sit much earlier on a longer curve than that headline trial figure.
The Appeal of a Daily Pill
For reviewers coming from injections, the format itself is often part of the appeal: no injection site, no needles to plan around, easier travel. But it isn't a universal win: several reviewers found a daily tablet genuinely harder to remember than a single weekly jab. A missed injection is a once-a-week problem; a missed pill is a decision made 365 times a year.
Foundayo Reviews by Dose
Foundayo 0.8mg reviews
As the starter dose, 0.8mg produces the widest range of reactions of any level. Some reviewers feel a clear effect within days; the "mental space" review earlier in this article was written just two weeks into 0.8mg. Others feel nothing at all for a month or more:
"No weight loss, no side effects... trying to remain optimistic." -u/loveshoes1, r/FoundayoUS, 0.8mg, 1 month in
Reviews at 0.8mg include people reporting no side effects at all, alongside others describing nausea, reflux or bowel changes during the first weeks.
Foundayo 2.5mg reviews
Reviewers moving to 2.5mg describe a similarly wide split. Some find this the point where appetite suppression finally kicks in; others, including the reviewer quoted above, report no change even after a second full titration step. Side-effect reports at 2.5mg range from none at all through to the severe reactions covered in the side-effects section below; some reviewers noted their symptoms became more noticeable after stepping up from 0.8mg.
Foundayo 5.5mg and higher reviews
Several reviewers who felt little on the starter doses first reported a stronger effect once they reached 5.5mg or above, including switchers who reported little effect at lower Foundayo doses before noticing a clearer change at 5.5mg or above. This isn't universal, and it isn't a guarantee that a higher dose will work where a lower one didn't; it's simply where a number of "non-responder" stories in this dataset eventually turned around.
None of this means a particular dose "should" work for a given person. Dose changes should always follow the schedule agreed with a prescriber, not another reviewer's timeline.
Negative Foundayo Reviews
Side Effects: Nausea, Reflux and Digestive Symptoms
Gastrointestinal side effects are the most consistent complaint in Foundayo reviews, and they range widely in severity.
At the milder end, one reviewer described their first day on 0.8mg: some nausea, acid reflux and stomach cramping in the hours after taking it, managed with over-the-counter remedies and a heating pad, with a decent night's sleep despite it. At the more severe end, one reviewer switching from Zepbound described what happened after starting Foundayo in blunt terms:
"Vomiting and diarrhoea for four days straight." -u/ConfidentAd1387, r/Zepbound, comment on "My experience switching from Zepbound to Foundayo"
They said they could barely eat or keep water down, and decided to try the Wegovy tablet instead. A Drugs.com reviewer described a similarly severe reaction after moving from 0.8mg to 2.5mg: vomiting and diarrhoea followed by a hospital visit and a colitis diagnosis, which they said their doctors believed was linked to the medicine. Both are individual experiences and cannot tell us how likely these reactions are, but they illustrate the more severe end of the experiences reported in the dataset.
Constipation is also widely reported. Reviewers who managed it well generally credited consistent fibre and water intake, sometimes with a fibre supplement added.
Pharmacist insight: "Mild digestive side effects such as nausea, diarrhoea or constipation can occur, particularly when starting treatment or increasing the dose. What matters is the severity and whether symptoms are settling. If you’re repeatedly vomiting, unable to keep fluids down, have severe or persistent abdominal pain, or your symptoms are getting worse rather than better, contact your prescriber or seek medical advice rather than simply trying to push through them." -Alessandro Grenci, Superintendent Pharmacist at medino
"I Feel Like I'm Taking Nothing"
A recurring, frustrated theme comes from reviewers, often switchers, who feel no effect at all, sometimes after more than one dose increase.
"I feel like I'm taking nothing." -u/Happywithit8675, r/FoundayoPill, switched from 4mg Wegovy pill, now on 2.5mg
This reviewer had previously lost around 25lb on semaglutide, with the food noise and evening cravings clearly under control. Restarting titration on Foundayo, they described no appetite suppression, no reduction in food noise, and around 5lb regained. It's a legitimate and understandable frustration, and importantly, not necessarily the end of the story. Several reviewers who felt nothing at 0.8mg or 2.5mg went on to notice a real difference once they reached 5.5mg or higher.
Switching From Mounjaro or Zepbound
This is where Foundayo reviews are most divided. Foundayo (orforglipron) works on the GLP-1 receptor only; Mounjaro and Zepbound (tirzepatide) work on both GIP and GLP-1 receptors. Tirzepatide has generally produced greater average weight loss in its own obesity trials than orforglipron has in its trials; there's no verified dose-for-dose conversion between the two medicines, so switchers shouldn't assume a given Foundayo dose will match what they were used to.
One reviewer who'd lost 26lb on 5mg Zepbound switched to Foundayo 0.8mg for cost reasons and described persistent bloating, gas and a returning appetite:
"Not the same medicine, not as good." -u/middleagedwhitechick, r/Zepbound, switched from 5mg Zepbound to 0.8mg Foundayo
A Drugs.com reviewer who had lost 105lb over fourteen months on Zepbound reported gaining 6lb in the first twelve days on Foundayo 0.8mg, with cravings returning:
"With a vengeance." -Drugs.com reviewer, switched from Zepbound, less than 1 month on Foundayo
A third reviewer, previously on 15mg of tirzepatide, restarted on Foundayo after a gap and described 0.8mg as "like taking nothing," while 2.5mg brought food noise down to "about a 5 out of 10", better, but far from where they'd been on the higher-dose injectable. They were moving up to 5.5mg in the hope of a stronger effect.
Not every switcher struggles this much; some moving from lower or moderate tirzepatide doses reported a smoother transition, particularly for maintenance rather than continued weight loss.
Switching From Wegovy
The semaglutide-switching reviews in our sample include both positive and negative experiences; as the "taking nothing" review above shows, switching from Wegovy doesn't guarantee a smooth transition. That said, the maintenance trial evidence below did find somewhat greater retention of previous weight loss after switching from semaglutide than after tirzepatide. Some reviewers valued Foundayo's lack of fasting requirements over the Wegovy tablet's stricter administration rules; others found the appetite control simply weaker during titration.
Foundayo Reviews for Weight-Loss Maintenance
Maintenance is likely to become one of the more common reasons UK patients consider Foundayo, and here the clinical evidence is unusually direct. In the ATTAIN-MAINTAIN trial, people who had already lost significant weight on injectable tirzepatide or semaglutide were switched to Foundayo or placebo and followed for a year. Those switching from tirzepatide retained an estimated 74.7% of their previous weight loss on Foundayo, against 49.2% on placebo. Those switching from semaglutide retained an estimated 79.3%, against 37.6% on placebo.
In plainer terms: on average, people switching to Foundayo did not maintain all of the weight they had previously lost, although they retained substantially more than those switched to placebo. Reviews broadly reflect that pattern. One reviewer in early maintenance described being at goal weight and simply holding there, "no mental effort", while others, particularly recent switchers from high-dose Mounjaro, described regaining enough that they were weighing up going back to their injectable.
Pharmacist insight: "Foundayo shouldn’t be thought of as a tablet equivalent of a particular Mounjaro or Wegovy dose. They are different medicines, so the experience after switching can be different too. Some people may notice more appetite or regain some weight during the transition. If that happens, speak to your prescriber rather than changing the dose yourself, as they can assess how you’re responding and whether the treatment remains appropriate for you." -Alessandro Grenci, Superintendent Pharmacist at medino
So, Are Foundayo Reviews Good?
Foundayo currently holds a 7.1/10 average from 33 weight-loss reviews on Drugs.com, with just over half of reviewers reporting a positive experience. That leans encouraging, but it isn't the whole picture, nor should it be read as a settled verdict this early, with so few reviews behind it.
What comes through far more clearly than a single number is the range: reviewers who felt a genuine shift in how food occupies their mind within days of the first dose, and reviewers who felt nothing at all for months. Reviewers who lost weight steadily without much side-effect burden, and reviewers who ended up in hospital. Reviewers switching from higher-dose injectable GLP-1 treatments who found Foundayo a real letdown, and reviewers for whom it was the first thing that had ever worked.
Perhaps the most useful reviews sit somewhere between those extremes. One reviewer, several months into a low dose after years of failed attempts at weight loss, put the medicine firmly in its place rather than crediting it with everything:
"You still need to do the work to lose weight." -u/Consistent-Slice-840, r/FoundayoUS, 0.8mg, ~10 weeks in
Another, on Drugs.com, described the same self-regulating effect in three words after two months and 8lb lost with no side effects:
"Uncomfortable if I eat too much." -Drugs.com reviewer, 2 months on Foundayo
Together, those comments capture a useful middle ground between the most enthusiastic and most negative reviews: a tool that reduces the pressure around food, not a medicine that removes the need for effort entirely.
One reason reviews differ so much is that people start Foundayo from very different places. Someone taking their first GLP-1, someone switching from 15mg of Mounjaro, and someone already at goal weight using it for maintenance are answering different questions when they review the medicine; and none of those starting points makes a review more or less valid than another.
Pharmacist insight: "Reviews are useful for understanding what taking Foundayo can feel like, but they can’t predict how an individual will respond. Someone starting their first GLP-1 treatment is in a very different position from someone switching from a high dose of another medicine. I’d look at the reviews as examples of the range of experiences people can have, rather than as a guide to the result you should expect yourself." -Alessandro Grenci, Superintendent Pharmacist at medino
Foundayo is still new enough that this remains an early picture. The Drugs.com rating is built on 33 reviews, a fraction of what now exists for Wegovy or Mounjaro, and is likely to shift as more people share longer-term experiences.
Frequently Asked Questions
Are Foundayo reviews positive?
On balance, yes, though not uniformly. Foundayo has a 7.1/10 rating from 33 weight-loss reviews on Drugs.com (checked 21 August 2026), with 55% of reviewers reporting a positive experience and 12% a negative one. The strongest positive theme is reduced appetite and food noise; the most common negatives are gastrointestinal side effects and a lack of noticeable effect at lower doses.
How much weight are people losing on Foundayo?
Reviews range widely: from no noticeable change after a couple of months to 25lb or more within about three months, usually alongside deliberate diet and exercise changes. In the ATTAIN-1 trial, the highest studied dose produced an average of 11.2% of starting body weight lost over 72 weeks, against 2.1% on placebo. Individual results vary considerably, and early reviews cover a much shorter period than that 72-week trial figure.
Does Foundayo reduce food noise?
Many reviewers say it does, sometimes within the first few days, although the effect isn't universal and can vary in strength between doses for the same person.
How quickly does Foundayo start working?
Some reviewers notice appetite changes within days of their first 0.8mg dose; others notice little for several weeks, particularly at the lower titration doses. There's no reliable single timeline for an individual.
Why am I not losing weight on Foundayo 0.8mg or 2.5mg?
0.8mg and 2.5mg are early steps in Foundayo's dose-escalation schedule, which is designed to help the body adjust gradually, and several reviewers report little weight change until a higher dose. If you have concerns about your progress, speak to your prescriber rather than adjusting your dose independently.
What are Foundayo's most commonly reported side effects?
Nausea, constipation, diarrhoea, vomiting, dyspepsia, abdominal pain, headache and fatigue are the most commonly listed reactions, and they broadly match what dominates user reviews, particularly around dose increases.
Can you switch from Mounjaro to Foundayo?
It's possible under medical supervision. Some switchers, particularly those previously on higher tirzepatide doses, report weaker appetite suppression during Foundayo titration, and clinical maintenance data shows some average weight regain after switching, although Foundayo retained substantially more of the prior weight loss than placebo. Any switch should be planned with your prescriber.
Can Foundayo be used for weight maintenance?
Yes. The ATTAIN-MAINTAIN trial found that participants switching from tirzepatide retained an estimated 74.7% of their previous weight loss on Foundayo, and those switching from semaglutide retained an estimated 79.3%, both substantially more than on placebo.
Do you have to take Foundayo on an empty stomach?
No. It can be taken at any time of day, with or without food, according to the MHRA authorisation.
Is Foundayo better than Mounjaro, or the Wegovy pill?
Neither comparison has a settled answer. Foundayo and Mounjaro work through different mechanisms and haven't been compared head-to-head; the same is true of Foundayo and the Wegovy tablet. The better option depends on clinical suitability, prior response, tolerability and personal preference. See Medino's Mounjaro Reviews and Wegovy Pill Reviews.
