Support for sleep

NL-SELANK™ (OKTAPEPTYD)

Q: Can NL-SELANK™ be used long-term?

Yes. NL-SELANK™ can be taken regularly and over the long term, as it naturally supports neurochemical balance and the body’s stress response. It is non-addictive , non-sedative, and does not cause mood crashes after discontinuation.

Q: How should NL-SELANK™ be taken?

We recommend two capsules daily , preferably in the morning or during the day — especially during periods of increased stress or when heightened focus is required. Regular use helps maintain emotional balance and stable, consistent energy.

Q: Can NL-SELANK™ be combined with other peptides or supplements?

Yes. NL-SELANK™ pairs perfectly with NL-EPITHALON™ (for sleep and regeneration) and NL-BPC-157 (for immunity and tissue repair). Together, they deliver full-spectrum support — from mind to body.

Q: Does NL-SELANK™ contain any banned or doping substances?

No. NL-SELANK™ is completely free from prohibited or doping ingredients and fully compliant with WADA regulations. Each batch is tested in accredited laboratories across Europe, ensuring the highest levels of purity and safety.

A New Level of Balance and Stress Resilience

NL-SELANK™ is the world’s first supplement containing an octapeptide, developed with our patented NL-PEPTIDES™ technology — the next generation of peptide innovation.

This exceptional compound supports both the nervous and immune systems, helping you maintain calm, focus, and emotional stability — without drowsiness or sedation.

Working at the neurochemical level, NL-SELANK™ helps regulate serotonin and dopamine levels, improving mood, mental clarity, and natural resistance to stress.

Each capsule contains a pharmaceutical-grade peptide, synthesized in Europe and verified in accredited laboratories across Poland, Germany, and Switzerland.

💡 The result: deeper calm, sharper focus, balanced mood, and natural mental resilience.

Technology you can trust.

One time purchase

239,00 zł

1 PC
3 PCSSave 25%
5 PCSSave 30%

Product variants

Who Is It For?

Where NL-SELANK™ Makes the Difference

Stress & Emotional Balance

Reduces nervous tension and strengthens your ability to cope with stress.

Helps maintain calm, clarity, and composure under pressure.

Focus & Cognitive Function

Supports memory, attention, and mental performance.

Enhances productivity and clear thinking throughout the day.

Immunity & Recovery

Strengthens the immune system and supports recovery from physical or emotional stress.

Promotes holistic balance, helping the body restore its natural stability.

Why?

Why is our peptide so effective?

Micro-Pellet Technology

What is it?

An innovative delivery system containing an absorption enhancer and a pH-modulating compound.

Why it matters:

Studies show that lowering intestinal pH improves peptide uptake, allowing faster and more efficient absorption into the bloodstream.

In simple terms:

Our product works faster, more effectively, and more safely.

THE OCTAPEPTIDE – NL-SELANK™

What is it?

A neuroactive peptide developed through our NL-PEPTIDES™ technology, designed to act on both the nervous and immune systems.

Why it matters:

NL-SELANK™ promotes emotional and cognitive balance, reduces the physiological impact of stress, and supports immune resilience.

It works gently and naturally — without the side effects common in synthetic calming agents.

In simple terms:

The peptide of calm and clarity — helping you stay focused, emotionally stable, and mentally strong in everyday life.

Dual-Layer Capsule

What is it?

A key element of our NL-DELIVERY™ technology. The inner layer protects the active compound, while the outer coating dissolves only under optimal intestinal conditions.

Why it matters:

This double protection prevents peptide degradation and ensures a higher concentration reaches the bloodstream.

In simple terms:

Greater peptide stability. Better results. Every time.

Each of us deserves to feel good in our own body.

That’s why we created a product that accelerates your natural recovery — from the inside out.

Because energy, health, and peace of mind shouldn’t require compromise.

How it works?

What is it and why does it work?

Purity and precision are the foundation of everything we do. That’s why we’ve built a transparent, rigorously controlled process, ensuring you receive a product of uncompromising pharmaceutical quality.

This is not the industry standard.

This is the SYNTHAGEN standard.

Patents & Technology

Our solutions are protected by two international patents covering the NL-PEPTIDES™ and NL-DELIVERY™ technologies. These proprietary systems power the unique, next-generation peptide formulas that set SYNTHAGEN apart.

Testing & Safety

Every batch is independently tested in accredited European laboratories in Poland, Germany, and Switzerland. These tests confirm purity, molecular stability, and compliance with the highest pharmaceutical standards.

Laboratory & Synthesis

Our peptides are synthesized exclusively in Europe, under tightly controlled laboratory conditions. Every step — from raw material to finished product — is meticulously monitored to ensure consistency, purity, and performance.

Research

Research on the composition of products

Purity and safety are our top priorities.

Each production batch undergoes independent chromatographic and compositional analysis in certified European labs.

Results consistently show purity levels exceeding industry standards and precisely controlled concentrations of the active compound.

✅ You get the certainty that every SYNTHAGEN product is safe, stable, and scientifically verified.

Find out more

OPINIONS

What do our customers say about Synthagen?

Can NL-SELANK™ be used long-term?

Yes. NL-SELANK™ can be taken regularly and over the long term, as it naturally supports neurochemical balance and the body’s stress response.

It is non-addictive, non-sedative, and does not cause mood crashes after discontinuation.

Is NL-SELANK™ suitable for both men and women?

Absolutely. Acting at the cellular and neurological level, it supports both the nervous and immune systems in a universal way.

Perfect for anyone — men or women — seeking better focus, calm, and overall mental well-being.

Are there any side effects?

None have been reported when used as recommended.

The product is completely safe — it does not negatively affect the hormonal or cardiovascular systems.

How should NL-SELANK™ be taken?

We recommend two capsules daily, preferably in the morning or during the day — especially during periods of increased stress or when heightened focus is required.

Regular use helps maintain emotional balance and stable, consistent energy.

Can NL-SELANK™ be combined with other peptides or supplements?

Yes. NL-SELANK™ pairs perfectly with NL-EPITHALON™ (for sleep and regeneration) and NL-BPC-157 (for immunity and tissue repair).

Together, they deliver full-spectrum support — from mind to body.

Does NL-SELANK™ contain any banned or doping substances?

No. NL-SELANK™ is completely free from prohibited or doping ingredients and fully compliant with WADA regulations.

Each batch is tested in accredited laboratories across Europe, ensuring the highest levels of purity and safety.

FAQ

FREQUENTLY ASKED QUESTIONS

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NL-SELANK™ (OKTAPEPTYD)

A New Level of Balance and Stress Resilience

Where NL-SELANK™ Makes the Difference

Why is our peptide so effective?

Micro-Pellet Technology

What is it?

Why it matters:

In simple terms:

THE OCTAPEPTIDE – NL-SELANK™

What is it?

Why it matters:

In simple terms:

Dual-Layer Capsule

What is it?

Why it matters:

In simple terms:

What is it and why does it work?

Research on the composition of products

What do our customers say about Synthagen?

FREQUENTLY ASKED QUESTIONS

Customer Reviews

Reviews in Other Languages