Peptide Schedule
Crystagen4 residuesAEDREach bubble = one amino acid. Size = residue mass. Color = chemical class.

Crystagen Dosage Calculator

ImmuneOralResearch~0.5-2 hours half-life

Crystagen is a synthetic tripeptide (Glu-Asp-Pro, molecular weight ~345 Da) developed through the Khavinson peptide bioregulator program at the St.

Supports T-cell and B-cell population balance in preclinical immune modelsPreserved thymic architecture in gamma-irradiated animal modelsActivated proliferation of human thymic epithelial cells in vitroNormalized immunogram parameters in approximately 82% of elderly patients in a Russian clinical observation4 weeks on / 12 weeks off

10mcg · Daily

100500
0.0 units
100 units (1mL)
Concentration
0
mcg/mL
Draw Volume
< 0.001
mL
Syringe Units
< 0.1
units
Doses / Vial
0
doses

Summary: Add 0mL BAC water to your 20mg vial. Draw to < 0.1 units on a U-100 syringe for a 10mcg dose. This vial will last 0 doses.

Cycle Planner

Oral. Typical beginner frequency: daily.

Crystagen Pharmacokinetics

Pharmacokinetics — Active Dose Over Time

t½ = ~0.5-2 hours (estimated, ultrashort peptide)
50%25%12.5%100%75%50%25%0%04h7h11h14h18hTime after injectionDose remaining
After 1 half-life (4h): 50% remainsAfter 2 half-lives (7h): 25% remainsAfter 3 half-lives (11h): 12.5% remains
At a 20mcg dose: 50% = 10mcg remaining after 4h. Recommended frequency: Daily.

Disclaimer: This curve is a simplified first-order exponential decay model. Actual pharmacokinetics vary based on injection site, individual metabolism, body composition, and other factors. Half-life values are approximate and based on available preclinical and clinical literature. Many research peptides lack formal human pharmacokinetic studies. This is for educational purposes only — not medical advice.

Crystagen Dosing Protocol

LevelDose / InjectionFrequency
Beginner10mgDaily
Moderate20mgDaily
Aggressive20mg2x Daily

Note: Crystagen (Glu-Asp-Pro) is a synthetic tripeptide derived from the Khavinson peptide bioregulator program, designed to mirror immunomodulatory fractions isolated from Thymalin. Typical courses run 10-30 days and are repeated 2-3 times per year. Take capsules 15-20 minutes before meals.

About Crystagen

Crystagen is a synthetic tripeptide (Glu-Asp-Pro, molecular weight ~345 Da) developed through the Khavinson peptide bioregulator program at the St. Petersburg Institute of Bioregulation and Gerontology. It was isolated as one of several bioactive fractions from Thymalin, a polypeptide thymus extract that's been approved in Russian clinical practice since 1982. The peptide targets immune system regulation, specifically T-cell and B-cell populations and thymic epithelial cell activity. In preclinical studies using gamma-irradiated rat models, Crystagen preserved the cortex-medulla architectural division of the thymus, maintained thymocyte proliferation, and increased macrophage and mast cell counts. In elderly patients, oral Crystagen administration contributed to normalization of the immunogram in approximately 82% of cases, according to a Russian clinical report. The peptide also promotes heterochromatinization of chromatin in blood lymphocytes from elderly subjects. In vitro, it activates proliferation of human thymic epithelial cells and inhibits proliferation of K-562 human erythromyelosis tumor cells. Most Crystagen research comes from a single research group, and the peptide hasn't undergone independent Western clinical trials.

Frequently Asked Questions