Research library / Comparisons

vs : what is the difference?

Two blends that share three peptides. One extra ingredient makes the difference.

and are research blends that share three peptides: , and . adds a fourth, . That one ingredient, plus the vial size, is the whole difference.

Prism Labs editorial · Updated September 10, 2026 · 2 min read

Lyophilized vial80mg · 99.86% purity$94.99View product

Lyophilized vial70mg · 99.81% purity$84.99View product

At a glance

Side by side:

: , and in a 70 mg lyophilized vial.
: the same three plus , in an 80 mg lyophilized vial.
Both: no single formula, because each is a blend. Each lot has its own COA that reports the blend.

Lyophilized vial from Prism Labs — Both products, each documented lot by lot.

The three shared peptides

Each component has its own origin:

: the copper complex of a tripeptide first reported in human plasma in 1973.
: a stable 15-residue fragment of a gastric-juice protein described in 1993.
: synthetic peptides based on thymosin beta-4, sequenced in 1981.

Sources: [1] Nature New Biology · 1973 · [2] Journal of Physiology (Paris) · 1993 · [3] PNAS · 1981

The difference:

is lysine–proline–valine, the last three amino acids of α-MSH. Papers describe it as the smallest α-MSH sequence with anti-inflammatory activity in lab models, and it has been studied in mouse models of intestinal inflammation since 2008.

Its full profile: What is peptide?

Sources: [4] Journal of Pharmacology and Experimental Therapeutics · 2003 · [5] Gastroenterology · 2008

How to compare them

No study cited here tested either finished blend. Each paper describes one component on its own, so the literature lines up component by component.

The practical questions are whether a protocol calls for the fourth component, and which vial size fits it. For concentration math, divide the vial’s content by the volume of water added, or use the reconstitution calculator.

Checking either blend

Read identity, purity and measured content separately on the lot’s COA, and match the lot number to your vial. Step by step: how to read a peptide COA.

Full profiles: What is peptide? and What is peptide?

A little more clarity

Questions, answered

What is the difference between and ?

contains the three peptides in plus , and comes in an 80 mg vial instead of 70 mg.

What is in ?

, and , in one 70 mg vial.

What is in ?

, , and , in one 80 mg vial.

Is stronger than ?

They differ in composition, not strength: one has a fourth peptide and 10 mg more total content. No study has compared the finished blends.

Are they for human use?

No. Prism Labs sells both blends for laboratory research use only.

Follow the evidence

Sources & reading notes

Open the original record for its methods and limitations. The sources below do not certify the supplied product or its finished formulation.

Nature New Biology · 1973 ↗
Original report of the copper-binding tripeptide in human plasma.
Journal of Physiology (Paris) · 1993 ↗
The gastric-juice protein behind the 15-residue fragment.
PNAS · 1981 ↗
Complete sequence of thymosin beta-4.
Journal of Pharmacology and Experimental Therapeutics · 2003 ↗
Separates the effects of the α-MSH core and its C-terminal tripeptide.
Gastroenterology · 2008 ↗
Tripeptide uptake through PepT1; mouse and cell models.

Prepared by Prism Labs from the linked source records and public product documentation. Research context only; not a preparation protocol or a claim about outcomes. Send a source correction.

From reading to verification

Match the material to its record.

Check the product, size and lot. Then read identity, purity and measured content as separate results.

How to read a COA →Find your batch →