Best peptides for fat loss in the UK
Four compounds dominate UK fat-loss discussion. They work in genuinely different ways, which is what should decide between them.
Quick comparison
| Compound | How it works | Dosing | Suits |
|---|---|---|---|
| Retatrutide | Triple agonist (GLP-1/GIP/glucagon) | Weekly | Strongest appetite effect |
| Tirzepatide | Dual agonist (GLP-1/GIP) | Weekly | Well-established, predictable |
| Cagrilintide | Amylin analogue - satiety signalling | Weekly | Stacking or GLP-1 alternative |
| 5-Amino-1MQ | NNMT inhibition in fat cells | Daily oral-style protocol | No appetite suppression wanted |
Retatrutide
The newest and most talked-about of the group, acting on three receptor pathways rather than two. Users typically describe the strongest appetite reduction of anything in this list.
Because the effect is strong, slower titration is the usual advice to keep nausea manageable.
Tirzepatide
The most established option, with a well-mapped titration schedule and a large body of user experience behind it. For most people starting out, it is the more predictable choice.
Cagrilintide
An amylin analogue that works on satiety signalling rather than the GLP-1 pathway. It is discussed both as an alternative for people who tolerate GLP-1s poorly and as an addition alongside one.
5-Amino-1MQ
The outlier: it targets fat cell metabolism rather than appetite. That means no appetite suppression, which some people specifically want - particularly anyone training hard and needing to eat.
No appetite suppression means diet has to be managed deliberately.
How to choose
- New to peptides and want predictability - Tirzepatide
- Appetite is the main obstacle - Retatrutide
- GLP-1s were poorly tolerated - Cagrilintide
- You want fat loss without losing appetite - 5-Amino-1MQ
- Whichever you choose: protein, resistance training, consistency
Frequently asked questions
Which peptide is strongest for fat loss?
Retatrutide acts on three receptor pathways and is commonly described as the strongest for appetite reduction.
Which is best for a beginner?
Tirzepatide is the most established with the clearest titration schedule.
Can they be combined?
Combinations such as a GLP-1 with Cagrilintide are widely discussed, but combine anything only with medical guidance.
Is anything available without appetite suppression?
Yes - 5-Amino-1MQ works on fat cell metabolism rather than appetite.
Are these available as pens?
Yes. We supply pre-filled pens only, so there is nothing to mix or measure.
How fast is UK delivery?
Free Royal Mail Tracked 24, dispatched same day on orders placed before 2pm on working days.