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G1 Peptides
Zen X

Brain & Mood

Zen X

SKU: G1H-ZEN-X

$349

Semax 5mg + Selank 5mg

Zen X pairs the two Russian-developed nootropic peptides — Semax for sharp focus and BDNF-driven neuroprotection, and Selank for non-sedating calm and stress resilience. Clear-headed focus and steady mood in one pen, with no sedation or dependency. Three-month supply (300 clicks), compounded in a US-licensed pharmacy and shipped cold-chain, refrigerator-stable. For use under licensed-provider supervision.

Prescription therapy. A licensed provider reviews every order before it ships — your free consultation is included.

Key Benefits

  • Sharper focus and faster cognition
  • Calm mood without sedation
  • Lifted motivation and drive
  • Non-habit-forming nootropic stack

Tools & reading

DOSAGE CALCULATORSemax + Selank →DOSAGE CALCULATORSelank →DOSAGE CALCULATORSemax →

About Zen X

Zen X is a blend of Selank and Semax, supplied as a compounded preparation. Combining them in one preparation means one injection instead of 2.

In published research, these compounds have been studied for stress & anxiety, focus, mood, focus & attention, and cognitive performance. Research interest is not proof of benefit, and individual results vary.

It is a prescription therapy: a licensed provider reviews every order before it ships.

What is in it

Selank

Selank is a synthetic analog of the immune peptide tuftsin, developed in Russia and studied for anxiolytic and nootropic effects without sedation. It is the calming half of G1's Zen X pen, paired with Semax.

Studied forStress & anxiety · Focus · Mood

How it works
Tuftsin analog; GABAergic and BDNF modulation
Status
Approved outside US
Half-life
Minutes

What is Selank? →Selank dosage calculator →Compare Selank →

Semax

Semax is a synthetic fragment of ACTH (4–10) with an added proline-glycine-proline tail, developed in Russia and studied for cognitive performance, attention, and neuroprotection through BDNF signalling. It is the focus half of G1's Zen X and Mega Mind pens.

Studied forFocus & attention · Cognitive performance · Neuroprotection

How it works
ACTH(4–10) analog; BDNF up-regulation
Status
Approved outside US
Half-life
Minutes

What is Semax? →Semax dosage calculator →Compare Semax →

How it is supplied

  • Prepared by a US compounding pharmacy.
  • Use exactly as your provider directs.
  • Storage: Refrigerated (2–8 °C); use within the pharmacy beyond-use date.
  • Compounded in US pharmacies, third-party tested, and shipped cold-chain.

How to inject peptides subcutaneously →

Dosing context

  • Zen X is a fixed-ratio blend, so every dose delivers its ingredients in the same proportion.
  • Your provider sets the dose and schedule for the blend as a whole.

Semax + Selank dosage calculator →Selank dosage calculator →Semax dosage calculator →

Safety

  • Risks noted in the literature: mild sedation, injection-site reactions, mild stimulation, and irritability.
  • Tell your provider about every medication and condition before starting, and report anything unexpected.
  • Not for use during pregnancy or breastfeeding unless your provider directs otherwise.

Peptide side effects and safety →Who should not use peptides →

How ordering works

  1. Tell us about your goals and health history in a free consultation with a licensed provider.
  2. The provider reviews your order. Prescription products ship only after that review.
  3. Your order is prepared by a US compounding pharmacy and shipped cold-chain to your door.
  4. Your care continues in the patient portal, where you can message your care team and request refills.

Book a free consultation →

Questions

What is in Zen X?
Zen X contains Selank and Semax. Per unit: Semax 5mg + Selank 5mg.
Do I need a prescription for Zen X?
Yes. Zen X is a prescription therapy. A licensed provider reviews your order before it ships, and the consultation is free.
How should I store Zen X?
Refrigerated (2–8 °C); use within the pharmacy beyond-use date.
How is Zen X shipped?
Orders ship cold-chain, in insulated packaging, so the product stays within its temperature range in transit.

For educational purposes only. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Use only under the guidance of a licensed provider.