Peptide Guide:
NPCRIZ and the Saint Petersburg Institute
Everything you need to know about NPCRIZ peptide bioregulators — Cytomaxes, Cytogens, complex preparations and delivery forms. One place, grounded in scientific research.
Contents
About NPCRIZ and the institute
NPCRIZ peptide products are the result of long-term research at the Saint Petersburg Institute of Bioregulation and Gerontology (also known as the Prof. Vladimir Khavinson Institute). The institute was founded in 1992 on the initiative of Prof. Vladimir Khavinson (1946–2024).
Over 30+ years, the institute has published more than 800 scientific papers, obtained 200+ patents, and conducted clinical trials with thousands of patients worldwide.
NPCRIZ products are manufactured to GMP (Good Manufacturing Practice) standards. Purity, concentration, and microbiological cleanliness of each batch are verified in independent laboratories. Products carry EAC certification.
What are peptide bioregulators
Peptides are short protein chains of 2–50 amino acids. NPCRIZ's peptide bioregulators are particularly short: 2–4 amino acids. This size matters — it allows peptides to enter the cell and act at the DNA expression level without activating immune responses or allergic reactions.
"Selectivity is the key property of these peptides: Libidon peptides act only on prostate cells, Vladonix on thymus cells, Sigumir on cartilage chondrocytes."
Unlike hormones or medications, peptides act on natural regulatory processes, helping damaged or aged cells regain functional activity. The dose is measured in micrograms, so risk and side-effect profiles are low.
Cytomaxes vs Cytogens
Cytomaxes (natural)
- Origin: extracted from young animal (typically calf) tissues
- Composition: peptide complex (3–5 different di-/tri-/tetra-peptides)
- Example: Libidon — prostate peptides
- Range: 21 products, one per organ
- Suits: classic starting point, long-term therapy
Cytogens (synthesized)
- Origin: chemically synthesized in a laboratory
- Composition: single short peptide (di- or tri-peptide) at high purity
- Example: Cartalax — cartilage dipeptide AED
- Range: 6 products, major systems
- Suits: vegan, impaired digestion, strict dose control
Delivery forms
Capsules
60 capsules of 0.215 g
The classic form. Peptides protected by a hydroxypropyl methylcellulose shell. Consistent dose, long-term courses.
✓ Suits: first start, travel, consistent dosing
Sublingual
20 tablets of 0.15 g
Dissolves under the tongue. Peptides enter the bloodstream directly, bypassing stomach and liver. Faster onset.
✓ Suits: impaired digestion, liver disease, fast effect
Drops (PK series)
10 ml bottle
Liquid form with dropper. Flexible dose — 3–6 drops twice daily. Suits families.
✓ Suits: families, flexible dosing, hard to swallow tablets
Selection guide
| Situation | Recommended |
|---|---|
| First time trying peptides | Cytomaxes (capsules) |
| Avoiding animal products | Cytogens |
| Impaired digestion or liver function | Sublingual form |
| Post-COVID rehabilitation | GPL complexes |
| Specific function support (brain, joints, skin) | Prime Peptide |
| Family use, flexible dosing | Drops (PK series) |
| Fast effect (rehabilitation, acute state) | Sublingual + drops |
Safety and contraindications
Across 30+ years of clinical practice, NPCRIZ peptides have shown a low side-effect profile. The dose is measured in micrograms, so peptide toxicity is practically nonexistent.
- • Individual peptide sensitivity
- • Pregnancy and breastfeeding
- • Children under 18
- • Severe autoimmune conditions (consult a physician)