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Overview

London locations
Illustration of the ClariDay clinic at 10 Harley Street, London
Flagship

Our flagship consultation clinic in Marylebone

A calm, private setting near Smithfield

Rated 4.8 · Verified patient reviews

Foundayo Tablets — a weight loss tablet you take once a day

  • In a 72-week study, people on the highest dose lost 12.4% of their body weight
  • From £120 a month

UK-registered pharmacy, dispensed in the UK

Prescribed only after a clinician review

Free weekday next-day delivery in discreet packaging

OVERVIEW

What is Foundayo?

Foundayo is a prescription tablet for weight management. Its active ingredient, orforglipron, works on the same appetite hormone as the well-known weekly injections, so it steadies hunger rather than burning fat.

The difference is chemistry. Most of these medicines are peptides, which the stomach breaks down, so they either have to be injected or taken under strict fasted conditions. Orforglipron is not a peptide, so it survives the stomach on its own.

In practice that means one tablet a day, at whatever time suits you, with or without food, with any drink you like. There is nothing else to remember.

Honest comparison

Where it sits against the injections

A tablet does not shift as much weight as the strongest pen. Here is the real gap, and who each option tends to suit.

Foundayo tablet12.4%

72 weeks · Fewest rules of any option: no needle, no fasting window, no fridge.

Daily semaglutide tablet16.6%

64 weeks · More weight loss, but a fasted morning and a 30-minute wait every day.

Weekly semaglutide pen14.9%

68 weeks · One injection a week and nothing to think about in between.

Weekly tirzepatide pen22.5%

72 weeks · The largest average loss, if you are happy with a weekly injection.

Separate trials, separate groups of people, so these figures sit side by side rather than head to head. Averages only, and individual results vary.

YOUR PROJECTION

See what
12.4% weight loss
looks like for you

Put in your details to see a personalised trajectory over 72 weeks, based on Foundayo trial outcomes.

Enter your details

DOSING

Dosing Schedule

6 strengths, one step at a time. From £120 a month, everything included.

Starting dose

0.8mg

Month 1

£120

a month

Step up

2.5mg

Month 2

£145

a month

Maintenance

5.5mg

Month 3

£175

a month

9mg

Month 4

£195

a month

14.5mg

Month 5

£225

a month

17.2mg

Month 6 onwards

£245

a month

THE PRACTICAL DIFFERENCE

The tablet with nothing to remember

Both are daily tablets. Only one asks you to plan your morning around it. Tap between them.

Foundayo

The other daily tablet

Foundayo

Orforglipron

  • Take it any time of day
  • With or without food
  • Any drink, any amount
  • No waiting before you eat
  • Room temperature, hand luggage

A routine you can keep is a routine that works.

One pathway

GLP-1

GLP-1

Slows stomach emptying, helping you feel fuller for longer

Reduces appetite and the drive to eat between meals

Helps quiet the background thinking about food

Helps control the rise in blood sugar after eating

HOW IT WORKS

How Foundayo works

Clinician-led treatment works with the body’s own appetite signals rather than against them, which is why the weight tends to stay off while you are on it.

Quieter appetite

The pull towards food between meals eases, so choices get easier.

Fuller for longer

Your stomach empties more slowly, so smaller meals still satisfy.

Fewer cravings

The constant background thinking about food tends to settle.

Steadier blood sugar

Fewer energy dips through the day, which means fewer hunger spikes.

Foundayo vs Wegovy tablets for weight loss

Two daily tablets, two very different routines. The medicine matters less than the routine you will keep.

Foundayo

Orforglipron · daily tablet
Any time, with or without food

Wegovy tablets

Oral semaglutide · daily tablet
Fasted, then a 30-minute wait

How often

Once a day

Once a day

Food rules

None, with or without food

Empty stomach, eight hours fasted

What you drink with it

Any drink, any amount

Up to half a glass of plain water

Waiting

None

At least 30 minutes before food

Time of day

Whenever suits you

Best first thing after waking

Average trial loss

12.4% over 72 weeks

16.6% over 64 weeks

SAFETY

Common side effects for
Foundayo?

Side effects are common when you start any new medicine. Most are mild and ease off as your body settles, and going up more slowly helps more than anything else.

Like all medicines, orforglipron has side effects. In the ATTAIN trials the common ones were nausea, diarrhoea, constipation and being sick. They were usually mild, worst in the first week after a dose increase, and faded within a few days as the body settled.

THE MOST COMMON FOUNDAYO SIDE EFFECTS INCLUDE

  • Feeling sick
  • Diarrhoea
  • Constipation
  • Being sick
  • Indigestion
  • Reduced appetite

These are usually worst in the first week after a dose increase and settle within a few days. Going up more slowly helps more than anything else.

WE WILL NOT PRESCRIBE IT IF

  • You are pregnant, breastfeeding or trying to conceive
  • You have had medullary thyroid cancer or MEN 2
  • You have had pancreatitis
  • You are already taking another GLP-1 medicine

Rare but serious — get medical help straight away for severe tummy pain spreading to your back, yellow skin or eyes, swelling of the face, lips or throat, trouble breathing, or vomiting you cannot stop.

Climb the doses slowly, use smaller plates, stop when comfortable rather than full, keep fatty and fried food light for a few days after a step up, and drink steadily. Most sickness and gut upset fades within a week.

Constipation, reflux, bloating, dizziness and tiredness can also happen. Speak to the clinical team if a symptom is lasting, worsening, or getting in the way of your usual routine.

Not sure if a side effect is normal?

Message the clinical team on WhatsApp, seven days a week. We can tell you what needs attention and what usually settles on its own.

MESSAGE YOUR CLINICAL TEAM

A clinician in your pocket, 7 days a week

Cancel anytime · No lock-in · No consultation fee

A hand holding a phone showing a WhatsApp conversation with the ClariDay clinical team
ClariDay Clinical Teamonline
Message

QUESTIONS

The things people
actually ask

  1. ATTAIN-1: orforglipron once daily in adults with obesity or overweight without type 2 diabetes, 72-week randomised placebo-controlled trial. New England Journal of Medicine, 2025.
  2. ATTAIN-2: orforglipron in adults with obesity or overweight and type 2 diabetes, 72-week randomised placebo-controlled trial.
  3. ACHIEVE programme: orforglipron in adults with type 2 diabetes, phase 3 trials of glycaemic control and weight.
  4. Orforglipron. Summary of Product Characteristics and patient information leaflet, electronic medicines compendium.

Authored by · 26 August 2026

Ali Salih — MPharm

Prescribing pharmacist
GPhC 2212755

Reviewed by · 26 August 2026

Dr A Ameer

Clinical pharmacist, medical review
UK-registered healthcare professional

★★★★★

5.0 / 5

from 1 verified review

Begin your clinical assessment today

Prescription, clinician review and pharmacy delivery included. You only pay if our clinicians approve your treatment.

✓ No charge unless our clinicians approve your treatment

Foundayo · 0.8mg · from £120/mo

from £120 a month

Quick self-check

Find out if a weight loss pen is right for you

Three quick questions. Takes under a minute.

Question 1 of 3

Your answers are confidential and reviewed by UK-registered clinicians.

Online Treatments

WEIGHT LOSS

Established pen

Lose 14.9% body weight

Advanced pen

Lose 20.9% body weight

Daily oral — needle-free

Lose 13.6% body weight

Daily tablet — no timing rules

Lose 12.4% body weight
London Clinics

LONDON LOCATIONS

Marylebone · W1G · £250

Flagship

Marylebone · W1H · £150

♢   UK-registered clinicians · Free weekday delivery