Amino Acid

L lysine

L-lysine is an essential amino acid, meaning it must be obtained from food or supplements. It contributes to protein synthesis and helps form structural cross-links within collagen.

It supports normal protein formation, connective-tissue structure and the body's production of carnitine.

In everyday life, L-Lysine provides an essential protein-building block to support collagen structure, normal tissue maintenance and everyday recovery.

Its contribution depends on ingredient form, quantity and the complete formulation.

Ingredient overview

What it is

L-lysine is an essential amino acid, meaning it must be obtained from food or supplements. It contributes to protein synthesis and helps form structural cross-links within collagen.

  • Scientific identity: L-Lysine; classification: Essential, cationic amino acid.
  • How it works: Must come from the diet: Humans have no synthesis route, and it is the limiting amino acid in cereal-based diets. Absorbed by a shared transporter: It crosses the gut wall on the cationic amino-acid transporter, which it shares with arginine.
  • Primary function: It supports normal protein formation, connective-tissue structure and the body's production of carnitine.
  • What it supports: L-Lysine provides an essential protein-building block to support collagen structure, normal tissue maintenance and everyday recovery.
  • Important consideration: Its contribution depends on ingredient form, quantity and the complete formulation.

Formulation rationale

Why we use it

CARPEDIEM selected L-Lysine for a clearly defined role within a thoughtfully balanced formulation.

  • Formulation purpose: It supports normal protein formation, connective-tissue structure and the body's production of carnitine.
  • Used in: CARPEDIEM Hair Skin Nails.
  • Works alongside: L-Lysine complements Copper to support a more coordinated functional-nutrition approach.
  • Meaningful contribution: L-Lysine provides an essential protein-building block to support collagen structure, normal tissue maintenance and everyday recovery. Contributes to the structural cross-linking processes involved in collagen formation.
  • Quality and scientific context: Its contribution depends on ingredient form, quantity and the complete formulation. Research is shown only when an ingredient-specific study demonstrates a relevant benefit.

Ingredient intelligence

How it works

An essential amino acid, and the raw material for collagen's tensile strength.

Step 01 / 04

Only from food.

Humans have no way to make it, and it is the amino acid most often short in cereal-based diets.

01 / 04

Status

Essential - the body cannot make it

Often short in

Cereal-based diets

Shares transport with

Arginine

Also builds

Collagen cross-links and carnitine

Descriptive of the ingredient's established biology. Not a claim to diagnose, treat, cure or prevent any disease.

All key functions

The complete functional profile connected with this ingredient.

Provides an essential amino acid that the body must obtain through daily nutrition.

Supports normal protein synthesis and the ongoing maintenance of healthy tissues.

Contributes to the structural cross-linking processes involved in collagen formation.

Supports connective-tissue nutrition within hair, skin and nail formulations.

Provides a building block used in the body's natural carnitine-producing pathways.

Complements vitamin C and other nutrients involved in structural protein maintenance.

Provides an essential protein-building block to support collagen structure, normal tissue maintenance and everyday recovery.

Works alongside L-Tyrosine and L-Carnitine within a more coordinated functional-nutrition formulation.

Complementary by function

Ingredient intelligence

How it works

An essential amino acid, and the raw material for collagen's tensile strength.

Step 01 / 04

Only from food.

Humans have no way to make it, and it is the amino acid most often short in cereal-based diets.

01 04

Status

Essential - the body cannot make it

Often short in

Cereal-based diets

Shares transport with

Arginine

Also builds

Collagen cross-links and carnitine

Descriptive of the ingredient's established biology. Not a claim to diagnose, treat, cure or prevent any disease.