Foundayo vs Mounjaro: pill or pen?
The strongest weekly injection against the most convenient daily tablet. The right answer depends on what you value more, maximum average loss, or a routine with zero friction.
The plain trade-off
Mounjaro wins the averages by a clear margin. Foundayo wins on friction: no needles, no fridge, no injection day, no sharps bin. In practice, the best treatment is the one still being taken in month nine, a "weaker" medicine taken consistently beats a stronger one abandoned in month two.
How people usually choose
- Maximum loss, needles fine: Mounjaro.
- Needle-averse, values simplicity: Foundayo.
- Unsure: the health check plus a conversation with your prescriber. Starting on one and switching later is normal.
Moving between them
Switching either way is routine. Moving to Mounjaro means starting at 2.5 mg regardless of your Foundayo dose. Moving to Foundayo means starting low and stepping up. Both transitions are planned at a check-in so appetite control never has a gap. See switching treatments.
| Foundayo | Mounjaro | |
|---|---|---|
| Active ingredient | Orforglipron | Tirzepatide |
| Format | Daily tablet | Weekly injection |
| Receptors | GLP-1 | GLP-1 + GIP |
| Trial average | About 12% at 72 weeks (ATTAIN-1) | Up to 21% at 72 weeks (SURMOUNT-1) |
| Food rules | None | None |
| Storage | Room temperature | Fridge, 2 to 8°C |
| Starting price | £79 per month | £139 per month |
Continue reading
Foundayo pill plan from £79 a month
Daily tablet, orforglipron. Price covers the medicine, prescriber review, monthly check-ins and tracked delivery.
Check if treatment suits youFree health check. You pay nothing until a prescriber approves.
Check your eligibilityAbout this page
- Written by
- Able Clinic editorial team
- Clinical review
- Pharmacy team at Curb Healthcare Ltd, GPhC 9012581
- Last reviewed
Each page is checked against the UK licence for the medicine. Read our editorial policy.