Intermittent Fasting on Foundayo: What People Say
Search for people describing intermittent fasting while taking Foundayo (orforglipron) and the picture is smaller than the question suggests. Few accounts describe a deliberate fasting routine started on the tablet. More describe something looser: meals that drift away, a morning with no breakfast in it, or a routine that simply carried on from before.
Fasting also comes up in a second way. People weighing Foundayo against the Wegovy tablets often mention the wait before eating that comes with the latter, and the fact that Foundayo has no such rule. The accounts below come from public forum threads. They are personal experiences, not evidence of how often anything happens or why.
What follows is how people put it in their own words: an old habit carried across, eating that fades from the day, and the daily schedule that decided which tablet some of them chose.
An Old Habit, Carried Across
For at least one person, fasting was already part of life before any medication arrived, and the move to Foundayo from tirzepatide did not interrupt it. Their day-by-day log of a first week is unusually specific about how the two fitted together.
"Pre-GLP1s (2024), I’d taken up intermittent fasting, and have kept that habit up throughout my use of Tirzep. Day 2 really allowed me to stick with that approach… no food through the first half of the day and then ate a fair amount for the early evening hours (dinner and dessert). I don’t binge eat like I would before."
– 1GrayJedi
Others describe an eating pattern that shifted without anyone planning it. In the third week of the lowest dose, one person found the first meal of the day moving later and the evening dose settling the routine around it.
"In my 3’rd week of the 0.8, and honestly I’m more inclined to skip breakfast (which used to be oatmeal) and have an early lunch (10:30ish), and regular dinner. I do take mine in the evening after dinner."
– Mathamagician77
The opposite instinct appears too. For someone else, the first queasy spells landed at the hours they would normally have eaten, and the response was to hold on to those hours rather than let them slip.
"The first couple of days I felt queasy from time to time and I realized that happened at my normal eating windows (lunch, mid-day snack, etc). So I see that as my body telling me to eat now."
– Feenix2010
Whether meals fade or hold their place, the shift is often described as something that happens to people rather than something they set out to do, which is the thread the next accounts pick up.
When Eating Becomes Something to Remember
A recurring thread is the surprise of reaching mid-afternoon without noticing. The gaps are not always framed as a plan, and they are not always framed as a problem.
"Saturday I was super hungry all day and I was eating a lot, today I didn't eat anything until 3pm and all I had was a few fries and 2 chicken wing flats and I was full and still am 😅"
– Meat-Locker1056
For another person, long stretches without food were nothing new. What changed was the swing at either end of them, described as a switch flipping between hunger and its opposite.
"Like I can easily go all day without eating and not really feel hungry until the switch flips to "I'm starving and about to die if I don't eat" and on the opposite side I can house a whole pizza and not feel "full" until I literally can't fit more food down my gullet. Foundayo solved that for me."
– LiftingCode
The gap can also become something to manage. On the highest dose, one person describes eating as slipping out of view rather than being turned off, and the workaround they settled on is mechanical.
"I set a timer for every two hours to remind myself to eat something small and refill my water. I just started the 14.5mg dosage Sunday and it’s not that I don’t want to eat, it’s more like I forget to eat because I’m so focused on whatever it is I’m doing that I just don’t think about eating."
– lookmanolurker
These accounts describe appetite going quiet rather than a schedule being chosen. A different group talks about timetables of a more literal kind, those attached to the tablet itself.
The Tablet With No Fasting Rule
Among UK readers weighing up the daily tablets, the timing of the dose comes up almost as often as the weight loss. For someone already following a 16:8 pattern, the question is whether a tablet that has to be taken before eating can fit the day at all.
"Umm was thinking if trying them as have been on Wegovey Injections for 8 months, but not sure now with the timings. I do 16/8 intermittant fasting. So I dont eat after 8 in the evening, so would need to take one at 5 in the morning ! Might just stick to the Injections unless a lot cheaper."
– Megsdaughter
Foundayo's UK prescribing information says it is taken once a day at any time of day, without food or water restriction, which is the detail people point to when they explain why they switched. For some, the reasons were physical as well as practical.
"The fasting requirement was also big factor in my decision to switch to Foundayo, since it seemed to make me even more nauseous forcing myself to wait to eat every day."
– HairballProphet
Others describe the choice as more about convenience than comfort, and a first-day thread of Foundayo starters shows how quickly it surfaced as the main reason for looking elsewhere.
"It’s the restrictions around taking the Wegovy tablets that are my main reason to change. I mean it’s not terrible having to take first thing and wait for 30 minutes to an hour before having a cuppa, but it’s a bit of a pain!"
– wegogovy
Morning medication already shapes some people's schedules, and for them an open dosing window removes a clash rather than creating a convenience.
"Taking a tiny pill once a day every day at any time works great for me (I have Hashimotos and have to take Synthroid in the morning)"
– middleagedwhitechick
Taken together, the accounts do not describe a single way of fitting fasting around Foundayo. They describe a tablet people can slot around the day they already have, and a day that sometimes rearranges itself around the tablet.
What Does Medino's Pharmacist Think?
"Foundayo can be taken at any time of day, with or without food, so there is no need to fast before taking it. However, reduced appetite can make it easy to skip meals unintentionally, and combining this with intermittent fasting may make it harder to get enough protein, vitamins and other essential nutrients. My advice is to focus on maintaining a balanced diet and adequate hydration rather than extending fasting periods. If you're struggling to eat enough or experiencing dizziness, fatigue or nausea, speak to your pharmacist or prescriber."
– Alessandro Grenci, Pharmacist at Medino
Many Different Routines
Taken as a whole, these accounts describe a medicine meeting a day that is already organised in its own way. A habit of fasting carries on for one person, a first meal slides later for another, and a third keeps their mealtimes firmly in place. What the accounts share is less a method than an adjustment, made day by day, around a tablet that asks very little about when it is taken.
