# Peptide Guide: Cytomaxes vs Cytogens

**URL:** https://www.gavau.lt/en/pages/peptidu-vadovas

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What are peptide bioregulators
Peptides are short protein chains made of 2–50 amino acids. The peptide bioregulators in NPCRIZ's range are particularly short: 2–4 amino acids. This size matters because it allows peptides to enter the cell and act at the DNA expression level without activating immune responses or allergic reactions.

Cytomaxes (natural)

Origin: extracted from young animal (typically calf) tissues corresponding to human organs.
Composition: a peptide complex (typically at least 3–5 different di-/tri-/tetra-peptides).
Example: Libidon — prostate peptides from calf prostate tissue.
21 products in the range — a peptide complex for each organ.


Cytogens (synthesized)

Origin: chemically synthesized in a laboratory.
Composition: usually a single short peptide (di- or tri-peptide) at high purity.
Example: Cartalax — synthetic cartilage dipeptide AED.
6 products in the range — covering major organ systems.
Vegan-suitable — no animal-derived components.


Which format suits me?

SituationRecommended format
First-time peptide userCytomaxes (classic starting point)
Avoiding animal productsCytogens
Impaired digestionSublingual form
General vitality supportGPL complexes
Specific function support (brain, joints)Prime Peptide
Flexible dosingPK drops


Safety and contraindications
NPCRIZ peptides have shown a low side-effect profile across 30+ years of clinical practice. Main contraindications:

Individual peptide intolerance
Pregnancy and breastfeeding (limited studies)
Children under 18 (limited studies)
Severe autoimmune conditions (consult a physician)


More on peptide forms (capsules, sublingual, drops) and the scientific basis of NPCRIZ.


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*Markdown version of https://www.gavau.lt/en/pages/peptidu-vadovas.*