Research into Crystagen typically focuses on its “geroprotective” (anti-aging) and immunomodulatory properties. Its primary benefits include:
Crystagen is a tripeptide consisting of three amino acids: L-Proline, L-Glutamic acid, and L-Aspartic acid (often abbreviated as Pro-Glu-Asp).
Its mechanism is highly specific:
Most data regarding Crystagen comes from clinical trials conducted in Russia and Eastern Europe.
Study Focus Key Findings Spleen Aging Research published in PubMed (e.g., Khavinson et al.) indicates that Crystagen possesses immunoprotective effects in the spleen. It was shown to activate B-cells and help maintain immune homeostasis during the aging process. Immune Deficiency Clinical observations of patients with secondary immunodeficiency showed a 30–40% improvement in immune markers (T-lymphocyte levels) after a 10–30 day course of Crystagen. Post-Traumatic Stress Data suggests that under conditions of extreme psycho-emotional stress, Crystagen prevents the involution (shrinking) of the thymus and spleen, maintaining the body’s defensive capacity.
Technical Note: Unlike Thymogen (which focuses heavily on T-cell differentiation), Crystagen has a broader regulatory effect on B-cell activity and is often considered more “gentle” for long-term immune maintenance.
Because Crystagen is a synthesized version of a naturally occurring peptide sequence, it is generally reported to have a high safety profile.




All products sold by APR Labs are for laboratory research use only. Not for human or animal consumption, injection, or medical use. APR Labs does not provide medical advice. By purchasing, you agree that you are a qualified professional and assume all responsibility for handling and use. See our Research Use Disclaimer for full terms.
By clicking ENTER, you confirm that you are 21 or older and understand that all products sold by APR Labs are strictly for research purposes only and NOT for human or animal consumption, or for any medical or therapeutic use.You also agree to comply with all applicable laws and take full responsibility for proper handling and use.
If you do not agree, please click EXIT.