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Amylin analog

Cagrilintide

Also known as Cagri

An amylin analog that boosts fullness, often stacked with a GLP-1.

Emerging evidence

Overview

Cagrilintide is a long-acting analog of amylin, a hormone released from the pancreas alongside insulin after meals. Natural amylin helps signal fullness, but its effects are short-lived. Cagrilintide is engineered for a longer duration of action, providing sustained satiety support across a whole week on a single injection. The mechanism is distinct from GLP-1 agonists: it slows gastric emptying and increases satiety signals through the amylin pathway rather than the GLP-1 pathway. This is why it is most commonly used as a complement to a GLP-1 or GLP-1/GIP agonist rather than on its own. The combination of semaglutide plus cagrilintide - sometimes referred to as CagriSema - has been studied in trials and shows additive effects on weight loss. Cagrilintide is indicated primarily for fat loss support and is a good fit for people who are already on a GLP-1 agonist and want to augment fullness signaling through a second, complementary pathway. It is given as a once-weekly subcutaneous injection on the same day each week. Dose range is 0.3 to 2.4 mg, titrated upward based on response. Like the GLP-1 agents it is often paired with, slow titration is used to manage GI tolerance. Cagrilintide is investigational - it has not received FDA approval as a standalone agent. It is not appropriate during pregnancy. The data base is emerging: human trial data exists but long-term approval is pending. Exact dosing, titration, and whether it fits your specific protocol are decisions made with a licensed provider in the PepDepo network at your consult.

At a glance

Route
SC injection
Dose
0.3-2.4 mg
Frequency
Once weekly
Timing
Same day each week
Cycle
Ongoing under supervision

Combining

Stacks well with: Semaglutide, Tirzepatide

Safety

Often combined with semaglutide (CagriSema).

Regulatory: Investigational.

Not appropriate if: pregnant.

Questions

What does cagrilintide actually do?

It mimics amylin, a hormone that slows how quickly your stomach empties and signals fullness to your brain. The long-acting formulation keeps this effect going for about a week from a single injection.

How is it taken?

Once-weekly subcutaneous injection on the same day each week. Doses range from 0.3 mg up to 2.4 mg, increased gradually over time.

Why is it usually combined with a GLP-1 agonist?

Because it works through a different pathway (amylin) than GLP-1 agonists, combining the two targets fullness from two separate mechanisms. The CagriSema combination - cagrilintide plus semaglutide - has shown additive weight-loss effects in trials.

Is it FDA-approved?

No, cagrilintide is currently investigational. It is not yet FDA-approved and is used only in supervised protocols.

Who should not use it?

People who are pregnant should not use cagrilintide.

Is this the same as amylin itself?

No. It is a synthetic long-acting analog of amylin designed to last a full week, whereas natural amylin breaks down quickly. This makes it practical for a once-weekly injection protocol.

Related protocols

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Education only, not medical advice. Peptides discussed are for informational purposes and many are not FDA-approved. Eligibility, prescribing, compounding, and dispensing are handled by appropriately licensed entities. Exact protocols and dosing are set with a licensed provider in the PepDepo network at consult. Content is pending clinical review.