Immunity Peptide Cheat Sheet

Your complete reference for immune-supporting peptides. Includes dosage, benefits, and mechanisms for Thymosin Alpha 1, Thymalin, Selank, LL-37, KPV, and more.

15 peptides·3 categories

For research purposes only.

This cheat sheet is a research reference only — not for human consumption or therapeutic use.

sel

Selank

Cognitive

Purpose
Cognitive Enhancement
Vial Size
5 mg
BAC Water
Nasal spray - no BAC needed
Dosing
250–500 mcg
Frequency
Daily
Cycle
4–8 weeks

thymu

Thymulin

Longevity

Purpose
Immune & Anti-Aging
Vial Size
5 mg
BAC Water
2 mL
Dosing
50–200 mcg
Frequency
Daily
Cycle
4–8 weeks

cry

Crystagen

Longevity

Purpose
Longevity & Anti-Aging
Vial Size
20 mg
BAC Water
2 mL
Dosing
1–2 mg
Frequency
Daily
Cycle
20 consecutive days

sel

Selank

Cognitive

Purpose
Cognitive Enhancement
Vial Size
Varies
BAC Water
1–2 mL
Dosing
250–600 mcg
Frequency
Daily
Cycle
4–8 weeks

thym

Thymogen

Longevity

Purpose
Immune & Gut
Vial Size
1 mg
BAC Water
1 mL
Dosing
100 mcg
Frequency
Daily
Cycle
20 consecutive days

thymos

Thymosin Beta-4

Healing

Purpose
Recovery & Repair
Vial Size
5 mg
BAC Water
2 mL
Dosing
1–2.5 mg
Frequency
2×/week
Cycle
4–6 weeks

liv

Livagen

Longevity

Purpose
Longevity & Anti-Aging
Vial Size
10 mg
BAC Water
2 mL
Dosing
100–200 mcg
Frequency
Daily
Cycle
20 consecutive days

vip

VIP

Cognitive

Purpose
Immune & Gut
Vial Size
5 mg
BAC Water
3 mL
Dosing
50–100 mcg
Frequency
Daily
Cycle
2–3 months

epi

Epitalon

Longevity

Purpose
Longevity & Anti-Aging
Vial Size
10 mg
BAC Water
3 mL
Dosing
1–5 mg
Frequency
Daily
Cycle
20 consecutive days

glu

Glutathione

Longevity

Purpose
Longevity & Anti-Aging
Vial Size
600 mg
BAC Water
5 mL
Dosing
100 mg
Frequency
2–3×/week
Cycle
8–12 weeks

thy

Thymalin

Longevity

Purpose
Immune & Gut
Vial Size
20 mg
BAC Water
2 mL
Dosing
10 mg
Frequency
Daily
Cycle
5–10 days

vil

Vilon

Longevity

Purpose
Immune & Gut
Vial Size
5 mg
BAC Water
3 mL
Dosing
5 mg
Frequency
Daily
Cycle
10–20 days

thymo

Thymosin Alpha 1

Longevity

Purpose
Immune & Gut
Vial Size
10 mg
BAC Water
2 mL
Dosing
1.5 mg
Frequency
Weekly (2×)
Cycle
6–12 weeks

kpv

KPV

Healing

Purpose
Immune & Gut
Vial Size
10 mg
BAC Water
2 mL
Dosing
200–500 mcg
Frequency
5 days on / 2 days off
Cycle
8 weeks

ll3

LL-37

Healing

Purpose
Immune & Gut
Vial Size
5 mg
BAC Water
2 mL
Dosing
100 mcg
Frequency
Daily
Cycle
4–6 weeks

Download the Immunity Peptide Cheat Sheet PDF

Save a free printable PDF of this peptide dosage cheat sheet — vial sizes, BAC water ratios, dosing amounts, and cycle lengths in one quick-reference chart.

Immunity Peptide Cheat Sheet — Research Notes

Key considerations and protocol notes for each peptide in this cheat sheet.

Cognitive

sel

Longevity

Selank

Selank is a synthetic heptapeptide derived from tuftsin with anxiolytic, nootropic, and immunomodulatory properties; it is most commonly administered as a nasal spray and is noted for reducing anxiety while enhancing focus and memory without sedation or dependence.

Longevity

thymu

Immunity

Thymulin

Thymulin is a thymic nonapeptide hormone that promotes T-cell differentiation and immune regulation, with research suggesting anti-inflammatory and anti-aging properties. It requires zinc as a cofactor for biological activity and is studied for immune restoration, particularly in age-related immune decline.

Longevity

cry

Immunity

Crystagen

Crystagen is a short peptide bioregulator (tripeptide) derived from the cerebellum, primarily used to support brain and nervous system function, cognitive performance, and neuroprotection. It is commonly cycled in the Khavinson bioregulator protocol and may support neuronal health and age-related cognitive decline.

Cognitive

sel

Longevity

Selank

Blend of Selank, Semax, Pinealon, and PE-22-28 targeting mood, memory, focus, and neurogenesis. Nasal spray formulations need no BAC water; injectable versions use 1–2 mL. Frequency: daily or 5 on/2 off. Dose is product-dependent.

Longevity

thym

Immunity

Thymogen

Thymogen (Glu-Trp) is a synthetic dipeptide derived from the thymus gland that modulates immune function by stimulating T-cell maturation and enhancing cellular immunity. It is used to support immune restoration, particularly in immunodeficient states, and has been researched for its anti-aging and immunomodulatory properties.

Healing

thymos

Longevity

Thymosin Beta-4

Thymosin Beta-4 (TB-500) is a naturally occurring peptide that promotes tissue repair, reduces inflammation, and accelerates healing of muscles, tendons, ligaments, and skin. It works by upregulating actin and promoting cell migration and angiogenesis, making it popular for injury recovery and wound healing.

Longevity

liv

Immunity

Livagen

Livagen is a short tetrapeptide (Lys-Glu-Asp-Ala) developed by the St. Petersburg Institute of Bioregulation, primarily studied for its ability to activate chromatin and restore gene expression in immune and cardiac cells, supporting longevity and cardiovascular health. It is used in peptide bioregulator protocols alongside other Khavinson peptides to support immune function and slow age-related cellular decline.

Cognitive

vip

Immunity

VIP

Regulates inflammation

Longevity

epi

Immunity

Epitalon

Telomerase activator, used in cycles

Longevity

glu

Immunity

Glutathione

Detox, inflammation, skin

Longevity

thy

Immunity

Thymalin

Restores immune balance (subQ)

Longevity

vil

Immunity

Vilon

Mild immunomodulator (subQ)

Longevity

thymo

Immunity

Thymosin Alpha 1

The BPC-157 of immunity. Great for immune system

Healing

kpv

Immunity

KPV

Anti-inflammatory, gut repair (subQ)

Healing

ll3

Immunity

LL-37

Antimicrobial and healing peptide (subQ)

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Frequently asked questions

What is a peptide protocol?

A peptide protocol is a structured research plan that specifies which peptides to study, the quantities and frequencies used in research settings, and the duration of the study period. Research protocols often combine multiple peptides that act on complementary biological pathways—such as tissue repair, cognitive function, or metabolic regulation—to investigate broader or synergistic effects. These protocols are intended for research purposes only and are not a guide for human consumption.

How is peptide dosage calculated from a vial for research?

In a research context, the concentration of a reconstituted peptide solution is calculated by dividing the total peptide content of the vial in micrograms by the volume of bacteriostatic water added in milliliters. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water yields a concentration of 2,500 mcg/mL. This information is provided for reference and laboratory calculation purposes only — not as a guide for human use.

How much bacteriostatic water is typically used for peptide reconstitution in research?

Research protocols commonly reconstitute peptide vials with 2mL to 3mL of bacteriostatic water, though the appropriate volume depends on the target concentration needed for a given study. Adding 2mL to a 5mg vial yields a concentration of 2,500 mcg/mL. This information is provided strictly for laboratory and research reference — not as instructions for human use.

How are peptides different from proteins?

Both are composed of amino acids, but peptides are significantly smaller than proteins. Due to their size, peptides can function as precise signaling molecules, binding to specific receptors and triggering targeted biological responses—such as stimulating growth hormone release, promoting tissue repair, or modulating immune activity. These mechanisms are the subject of ongoing scientific research.

Calculate peptide research quantities

Reference our peptide dosage, blend, and accumulation calculators for research purposes. Enter vial size, reconstitution volume, and target research quantity to calculate draw volumes instantly. For research use only — not administration or dosing guidance of any kind.