Immunity Peptide Cheat Sheet (2026): Immune System Support & Defense Guide

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.

For research purposes only.

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

sel

Cognitive Enhancement

5 mg

Nasal spray - no BAC needed

250–500 mcg

Daily

4–8 weeks

thymu

Immune & Anti-Aging

2 mL

50–200 mcg

cry

Longevity & Anti-Aging

20 mg

1–2 mg

20 consecutive days

ill

50 mg

3 mL

250–600 mcg

thym

Immune & Gut

1 mg

1 mL

100 mcg

thymos

Recovery & Repair

1–2.5 mg

2×/week

4–6 weeks

liv

10 mg

100–200 mcg

vip

50–100 mcg

2–3 months

epi

1–5 mg

glu

600 mg

5 mL

100 mg

2–3×/week

8–12 weeks

thy

5–10 days

vil

10–20 days

thymo

1.5 mg

Weekly (2×)

6–12 weeks

kpv

200–500 mcg

5 days on / 2 days off

8 weeks

ll3

Cognitive

Immunity

Healing

Longevity

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.

Selank is a lab-made peptide that can help calm anxiety and sharpen focus and memory, usually taken as a nasal spray. It doesn't make you drowsy and isn't habit-forming.

Thymulin is a natural hormone that helps train immune cells and may calm inflammation and slow some effects of aging on the immune system. It needs zinc to work properly, and people use it to support immune health, especially as they get older.

Crystagen is a very short peptide meant to support brain and nervous system health. It's taken in short cycles and may help protect brain cells and support memory as you age.

This is a blend of four brain-focused peptides (Semax, Selank, Pinealon, and PE-22-28) combined to support mood, memory, focus, and new brain cell growth. It comes as a nasal spray or injection, usually taken in the morning on an empty stomach, but there's no research yet on this exact four-peptide combination.

Thymogen is a very small peptide that helps the immune system mature and work better. It's used to support immune recovery, especially when someone's immune system is weakened, and is also studied for anti-aging benefits.

Thymosin Beta-4 (also called TB-500) is a peptide that helps the body heal tissue faster, calm inflammation, and repair muscles, tendons, ligaments, and skin. It's popular for recovering from injuries and wounds.

Livagen is a short peptide studied for helping cells 'turn back on' genes related to immune and heart health, which may support longevity. It's used alongside other similar peptides to support immune function and slow age-related decline.

VIP helps regulate inflammation in the body.

Epitalon may help activate an enzyme called telomerase, which is linked to cell aging, and is typically used in cycles.

Glutathione is a powerful antioxidant that supports detoxification, helps calm inflammation, and can improve skin health.

Thymalin helps restore balance to the immune system and is given as an injection under the skin.

Vilon is a gentle immune-system support peptide given as an injection under the skin.

Thymosin Alpha 1 is often called the 'BPC-157 of the immune system' because it's so widely used to support healthy immune function.

KPV helps calm inflammation and supports gut repair, given as an injection under the skin.

LL-37 has antimicrobial properties and supports healing, given as an injection under the skin.

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Frequently asked questions

What is a peptide dosage calculator?

A peptide dosage calculator is a free tool that converts your vial size, bacteriostatic water volume, and target dose into an exact syringe draw volume. Instead of doing the reconstitution math by hand, you enter three inputs and instantly get the concentration of your solution and how many milliliters or syringe units to draw. This calculator works for single peptide compounds and multi-peptide blends.

How do I calculate peptide dosage from a vial?

To calculate your peptide dose, divide the total peptide content of your vial in micrograms by the volume of bacteriostatic water you added in milliliters. This gives you your solution concentration in mcg/mL. Then divide your target dose by that concentration to get your draw volume. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water gives a concentration of 2,500 mcg/mL. A 250 mcg dose would require drawing 0.1mL. This calculator automates all of those steps instantly.

How much Bacteriostatic water should I add to a peptide vial?

Most people add 2mL to 3mL of bacteriostatic water per vial, but the right amount depends on the dose you want to draw and the syringe size you are using. Adding 1mL to a 5mg vial gives you a concentration of 5,000 mcg/mL, making each dose very small in volume. Adding 2mL gives you 2,500 mcg/mL, which is easier to measure on a standard insulin syringe. A general guideline is to choose a volume that puts your typical dose somewhere between 10 and 30 units on a U-100 syringe. Use the calculator above to test different water volumes and find what works for your dose.

How are peptides different from proteins?

Both are made of amino acids, but peptides are much smaller than proteins. Because of their tiny size, peptides can act like tiny messengers in the body, sending specific signals to your cells to tell them exactly what to do.​

Are peptides safe?

There is no single answer because every peptide is entirely different. Safety depends on the specific compound, how pure it is, the dose you take, the way it was made, and your own personal medical history.

Are all peptides medicines?

No, they are not all medicines. The word "peptide" just describes the shape and chemical makeup of the molecule, rather than its legal or medical status. While some are officially approved prescription drugs, many others are strictly for research or are used as standard health supplements.

What does peptide reconstitution mean?

Reconstitution is the simple process of mixing a freeze-dried powder with a safe liquid to turn it into a usable liquid solution. Whenever this is done, it requires very clean and sterile methods to prevent any harmful bacteria from getting into the mixture.

Which peptide is best for my goals?

There is rarely one single best option for everyone. Instead of looking for a magic compound, it is much safer and more effective to start by looking at your specific goals. We recommend exploring our category pages first to learn about the different options that align with what you want to achieve.

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.

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