Peptides  /  Dihexa
For Adults · Compounded Oral

Dihexa

An oral angiotensin IV-derived compound.

Dihexa, a small modified peptide derived from angiotensin IV, studied in the laboratory in relation to the HGF/c-Met pathway. Prescribed online after a licensed provider reviews your online visit, compounded by U.S. 503A pharmacies, and shipped discreetly to most U.S. states.

$299

Start your online visit →

A few private questions, then a licensed provider reviews your answers.

100% Online 503A Compounded Licensed Providers Discreet Shipping
ForbiddenRx Dihexa vial
At a glance
Form
Capsules
Cadence
Set by your provider
Class
Angiotensin IV analog (oral)
Guided by
Provider review
Helps with
Cognitive category
For
Adults 18+
The basics

What is Dihexa?

What it is
Angiotensin IV analog (oral)
Forms
Capsules
Supplied as
Strength set by your prescriber
Dosing
Set by your prescriber
Supply
1-month
Visit
Online, reviewed by a licensed provider
Prescription
Provider-reviewed · not available OTC
Shipping
Discreet, unmarked · most U.S. states
Start your online visit →

Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide) is a small, orally available compound derived from angiotensin IV. It was developed at Washington State University and is studied in relation to the hepatocyte growth factor (HGF) and c-Met signalling pathway.

The published research on Dihexa is preclinical, in animals and cell models. It has not been studied in controlled human trials, it is not an FDA-approved medication, and the preparation dispensed here is compounded.

This is a compounded preparation, not an FDA-approved medication, and compounded drugs are not reviewed by the FDA for safety or effectiveness. Individual results are not guaranteed. It is prescribed only where a licensed provider determines it is appropriate after reviewing your health history.

Why people ask about it

Why does Dihexa come up?

Dihexa comes up in cognitive conversations because of animal studies on synapse formation. There are no published controlled human trials, and its long-term safety in people is unknown.

✔A provider decides, not a quiz

Every Dihexa prescription here follows a review by a licensed provider of your health history, current medications and goals. If it isn't appropriate for you, it isn't prescribed.

✔Compounded, not a research chemical

Your vial is compounded by a licensed U.S. 503A pharmacy and dispensed against a prescription written in your name — not sold as a "research only" product with no oversight.

Know the difference

Prescribed Dihexa vs. supplements and grey-market vials — what's the difference?

The short answer: unregulated supplements make claims nobody checks, "research only" vials sold online carry no prescription, no pharmacy and no accountability, and a prescribed Dihexa is compounded by a licensed 503A pharmacy against a provider's order written for you.

 Oral supplement"Research only" vialPrescribed Dihexa (Rx)
What it isAn unregulated oral precursorA vial sold without a prescriptionCompounded Dihexa dispensed on a provider's order
Licensed provider reviews youNoNoYes — before anything is dispensed
Compounded by a licensed pharmacyNoNoYes — U.S. 503A
Your name on the vialNoNoYes
Dose set by a prescriberNoNoYes
Legal to sell for human useAs a supplementNoYes — by prescription

The simplest test of any peptide seller: is your name on the vial? A "research only" label means no prescriber reviewed you, no licensed pharmacy compounded it, and nobody is accountable for what is actually inside.

How it works

How does getting Dihexa actually work?

Three steps: answer a short set of medical questions, a licensed provider reviews them, and if they prescribe, a 503A pharmacy compounds and ships it.

I

Answer a few questions

A short private medical questionnaire — your history, current medications and what you are hoping to address. It takes a couple of minutes.

II

Meet your provider live

A provider licensed in your state reviews your answers online — no appointment, no waiting room. They decide whether Dihexa is appropriate.

III

Compounded & shipped

If they prescribe, a licensed U.S. 503A pharmacy compounds your vial and ships it discreetly, with your name on the label.

Who it's for

Who is Dihexa for?

It's for adults who want Dihexa prescribed and compounded properly rather than bought from a grey market. Whether it is appropriate for you is a decision for the provider who reviews your visit.

✔Interested in the cognitive category

You have read about Dihexa and want it prescribed properly rather than bought from a grey market.

✔You want a real prescription

Reviewed by a licensed provider, compounded by a 503A pharmacy, dispensed with your name on the label.

✔You would rather not inject

Dihexa is taken by mouth.

✔You understand the evidence is preclinical

Dihexa has been studied in animals and cell models, not in controlled human trials.

✕When it's not the right fit

Dihexa research is preclinical only, and the HGF/c-Met pathway it acts on is also involved in cell growth. Tell your provider about any cancer history. It is a compounded preparation, not an FDA-approved medication, and compounded drugs are not reviewed by the FDA for safety or effectiveness. Individual results are not guaranteed. If you are pregnant or breastfeeding, have an active cancer diagnosis, or have significant kidney or liver disease, tell your provider in your answers. New or unexplained symptoms should be evaluated by a clinician rather than self-treated.

How to get it

How do I get Dihexa online?

You answer a few questions, a licensed provider reviews your answers, and — if they prescribe — your medication is compounded and shipped to your door. No insurance required, no in-person appointment, no waiting room.

A few questions

Answer a short set of private medical questions. Add as many peptides as you like; one checkout, and a provider reviews each.

Online provider review

A provider licensed in your state reviews your answers online. Approval is never guaranteed.

Discreet delivery

If prescribed, your vial is compounded by a 503A pharmacy and ships in plain, unmarked packaging to most U.S. states.

Pricing is shown at checkout — no insurance needed, no hidden fees.

Using it & safety

How is it taken, and is it safe?

Dihexa is compounded as capsules. The amount and the schedule are set by the provider who reviews your visit — we deliberately do not publish a dosing regimen here, because that is a clinical decision about you, not a product specification.

Forms & how it's taken

Capsules
Compounded as capsules.
Supplied as
Strength set by your prescriber.
Dose & schedule
Set by your prescriber. Follow the directions on your label.
Supply
1-month supply.
CapsulesProvider-set

Safety & side effects

⚠ No controlled human trials

Dihexa research is preclinical only, and the HGF/c-Met pathway it acts on is also involved in cell growth. Tell your provider about any cancer history. It is a compounded preparation, not an FDA-approved medication, and compounded drugs are not reviewed by the FDA for safety or effectiveness. Individual results are not guaranteed.

Reported effects are most often related to the injection itself or to infusing too quickly. They can include:

  • Headache
  • Nausea
  • Difficulty sleeping
  • Long-term effects in humans are unknown

Tell your provider about every condition and medication before starting, including pregnancy or breastfeeding. Stop and seek care for signs of an allergic reaction — rash, swelling of the face or throat, or difficulty breathing. For emergencies call 911.

Compare your options

Which cognitive peptide fits you?

A side-by-side look at the cognitive options available through ForbiddenRx. Which one is appropriate for you is decided by the provider who reviews your visit.

TreatmentWhat it isFocusFormForRx required
Dihexa
This page		Angiotensin IV analog (oral)Cognitive categoryCapsulesAdults 18+Yes
DSIPNonapeptideSleep & recovery categoryInjectionAdults 18+Yes
Pinealon / PE-22-28 / SelankShort peptide combinationCognitive categoryInjectionAdults 18+Yes
SelankSynthetic heptapeptideCognitive categoryInjectionAdults 18+Yes
Questions, answered

Dihexa FAQ

What is Dihexa?

Dihexa is a small modified peptide derived from angiotensin IV, studied in the laboratory in relation to the HGF/c-Met signalling pathway.

Has it been tested in people?

There are no published controlled human trials. The research is in animals and cell models.

Is Dihexa FDA-approved?

No. It is a compounded preparation, not an FDA-approved medication, and compounded drugs are not reviewed by the FDA for safety or effectiveness. Individual results are not guaranteed.

Do I have to book an appointment?

No. You complete the questionnaire online and a licensed provider reviews it — there is no scheduling step and no waiting room.

Can I order more than one peptide?

Yes. Add each one to your cart and check out once. A provider reviews every treatment in your order.

Credibility you can verify

Care held to a higher standard

Licensed Providers

U.S. board-certified clinicians

503A Pharmacies

U.S.-based compounding partners

Most U.S. States

We confirm your state during intake

Explore more

Also in peptides

Injection · Sleep & recovery category

DSIP

Delta sleep-inducing peptide.

Learn more →
Injection · Cognitive category

Pinealon / PE-22-28 / Selank

Three short peptides in one vial.

Learn more →
Category

The Peptide Catalog

Every peptide we can dispense, each prescribed by a licensed provider and compounded by a 503A pharmacy.

Learn more →

Start with a real prescription

If you are going to take Dihexa, take one a licensed provider prescribed and a 503A pharmacy compounded with your name on it. Answer a few questions and a licensed provider reviews them.

Start your online visit →

  • Discreet, unmarked packaging
  • Refills so you never miss a dose
  • Labs guiding every adjustment
  • Licensed providers in most U.S. states
Medically reviewed

Sources & references

Medically reviewed by ForbiddenRx Medical Affairs — Independent, licensed medical providers · Last reviewed August 2026. This page was written and is periodically reviewed for medical accuracy in line with clinical guidance followed by the independent, licensed medical providers in the ForbiddenRx network. It is provided for general educational purposes and is not a substitute for professional medical advice, diagnosis, or treatment. Always talk with a licensed provider about your individual health.

  1. PubMed — Dihexa and the HGF/c-Met system, published studies.
  2. PubMed — angiotensin IV analogs and cognition, published literature.
  3. U.S. Food & Drug Administration. 503A Pharmacy Compounding — the regulatory basis for how this preparation is dispensed.
For further reading

Clinical references

This page is educational and is not medical advice.