# Dihexa (N-Hexanoic-Tyr-Ile-(6)-Aminohexanoic Amide)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/dihexa-n-hexanoic-tyr-ile-6-aminohexanoic-amide
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-18
**Evidence Score:** 4 / 10
**Category:** Other
**Also Known As:** N-Hexanoic-Tyr-Ile-(6)-Aminohexanoic Amide, PNB-0408, Dihexa peptide, Cognitive enhancement peptide, Synaptogenic nootropic, Neurogenic hexapeptide

## Overview

Dihexa is a synthetic nootropic peptide that enhances [cognitive function](/ingredients/condition/cognitive) by promoting synaptogenesis through activation of hepatocyte growth factor (HGF) receptors. This compound stimulates the formation of new synaptic connections, potentially improving memory retention and neural communication.

## Health Benefits

- May enhance cognitive function and memory by promoting synaptogenesis, which is vital for neural communication. Increased synaptogenesis can improve memory retention by up to 30%. - Supports brain health and [longevity](/ingredients/condition/longevity) by reducing [oxidative stress](/ingredients/condition/antioxidant), which helps prevent neurodegenerative diseases. Antioxidant properties protect neurons from damage. - Enhances learning and memory retention by increasing neurotrophic factors, which are crucial for brain plasticity. Higher levels of neurotrophic factors support cognitive resilience. - Boosts focus and concentration by modulating cholinergic pathways, which are essential for attention. Improved cholinergic activity supports sustained mental effort. - Provides [neuroprotective effect](/ingredients/condition/cognitive)s by reducing inflammation, which helps maintain cognitive function. [Anti-inflammatory](/ingredients/condition/inflammation) properties are vital for brain health preservation. - Enhances mood and reduces anxiety by balancing neurotransmitter levels, promoting emotional stability. Balanced neurotransmitters contribute to improved mental well-being. - Supports recovery from brain injuries by facilitating neural repair, which is crucial for cognitive rehabilitation. Enhanced neural repair mechanisms aid in faster recovery.

## Mechanism of Action

Dihexa functions as a hepatocyte growth factor (HGF) mimetic, binding to and activating c-Met receptors in neural tissue. This activation triggers downstream signaling cascades including PI3K/Akt and MAPK pathways, which promote dendritic spine formation and synaptic plasticity. The compound specifically enhances N-methyl-D-aspartate (NMDA) receptor function, facilitating [long-term potentiation](/ingredients/condition/cognitive) crucial for memory formation.

## Clinical Summary

Research on dihexa is primarily limited to preclinical animal studies, with most human data being anecdotal. Rodent studies have shown cognitive improvements of 20-30% in memory tasks, with effective doses ranging from 0.1-1 mg/kg. Some small-scale human trials have reported enhanced [working memory](/ingredients/condition/cognitive) and processing speed, but these studies lack proper controls and statistical power. The evidence base remains preliminary and requires larger, controlled clinical trials to establish efficacy and safety in humans.

## Nutritional Profile

- Synthetic peptide with no caloric or macronutrient content.
- Promotes synaptogenesis and neurogenesis.
- Modulates neurotrophic factor pathways.

## Dosage & Preparation

Dosage information is limited; consult a healthcare provider before use.

## Safety & Drug Interactions

Limited safety data exists for dihexa in humans, with most adverse effects reported anecdotally including headaches, fatigue, and mood changes. The compound may interact with medications affecting [neurotransmitter](/ingredients/condition/cognitive) systems, particularly those targeting NMDA receptors or growth factor pathways. Due to its peptide structure and unknown long-term effects, dihexa is not recommended during pregnancy or breastfeeding. Users should consult healthcare providers before combining with antidepressants, anticonvulsants, or cognitive enhancers.

## Scientific Research

Dihexa has been studied in preclinical models, showing potential in enhancing [cognitive function](/ingredients/condition/cognitive) and promoting brain health, though human studies are limited.

## Historical & Cultural Context

Developed in recent years as a potential treatment for neurodegenerative diseases, Dihexa represents a novel approach to [cognitive enhancement](/ingredients/condition/cognitive).

## Synergistic Combinations

NSI-189, CDP-Choline, Alpha-GPC

## Frequently Asked Questions

### What is the typical dihexa dosage for cognitive enhancement?

Anecdotal reports suggest 5-10 mg taken sublingually 2-3 times per week, though no official dosing guidelines exist. Most users cycle dihexa with 3-4 days between doses to prevent tolerance. Clinical research has not established safe or effective human dosages.

### How long does dihexa take to show cognitive effects?

Users typically report initial cognitive improvements within 30-60 minutes of sublingual administration, with peak effects lasting 4-6 hours. Long-term neuroplasticity benefits may develop over weeks of consistent use. Individual response varies significantly based on baseline cognitive function and dosage.

### Can dihexa be taken with other nootropics safely?

Limited data exists on dihexa interactions with other nootropics, though it's commonly stacked with racetams and cholinesterase inhibitors. Combining with NMDA antagonists like memantine may reduce effectiveness. Users should avoid combining with other experimental peptides due to unknown interaction risks.

### Is dihexa legal to purchase and use?

Dihexa exists in a legal gray area in most countries, not approved for human consumption but available for research purposes. It's not FDA-approved as a supplement or medication in the United States. Legal status varies by jurisdiction and users should verify local regulations before purchasing.

### What makes dihexa different from other cognitive enhancers?

Unlike traditional nootropics that modulate neurotransmitters, dihexa promotes structural brain changes through synaptogenesis and dendritic spine formation. Its mechanism targeting HGF/c-Met pathways is unique among cognitive enhancers. This structural approach may provide longer-lasting benefits compared to acute neurochemical modulators.

### Does dihexa interact with common medications like antidepressants or blood pressure drugs?

Dihexa has limited human clinical data on drug interactions, but its mechanism of action through synaptogenesis suggests potential interactions with medications affecting neurotransmitter systems, particularly SSRIs and other psychiatric drugs. Consult with a healthcare provider before combining dihexa with prescription medications, as individual responses may vary based on drug metabolism and brain chemistry alterations. Current evidence is insufficient to determine specific contraindications, making professional medical guidance essential.

### Is dihexa safe for aging populations or those with neurodegenerative disease risk?

Dihexa may be particularly beneficial for aging individuals and those at risk for neurodegenerative diseases due to its antioxidant properties and potential to reduce oxidative stress, a key factor in neurodegeneration. However, safety data in elderly populations remains limited, and those with existing neurological conditions should consult healthcare providers before use. The ingredient's neuroprotective mechanisms show promise for longevity support, but age-related pharmacokinetics may affect individual tolerance.

### What does clinical research actually show about dihexa's effectiveness for memory enhancement?

Preliminary research suggests dihexa can improve memory retention by up to 30% through promotion of synaptogenesis, which enhances neural communication pathways critical for learning and recall. However, most evidence comes from preclinical and animal studies, with limited human clinical trials currently available to confirm these effects in real-world populations. The research quality is considered promising but not yet robust enough for definitive clinical claims, requiring further human studies for validation.

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