What is Dihexa, and what is a Dihexa search asking?
Dihexa is N-hexanoic-Tyr-Ile-(6) aminohexanoic amide, a chemically stabilized analogue of the angiotensin IV fragment Nle-Tyr-Ile [1]. PinPoint's library lists it as research use only, logged by oral or subcutaneous route, with a 304 hour half-life input marked low confidence and no package example [2].
A dihexa or dihexa dosage search raises two questions: whether it improves memory, and how much is taken. The first is a claim about effects in people, which the source did not test. The second has no answer in the library, because there is no human amount and no presentation to convert.
What does the Dihexa research report?
The 2013 paper set out to make angiotensin IV-related peptides resistant to breakdown and able to cross the gut and the blood-brain barrier [1]. Several modifications improved stability while preserving the ability to reverse a drug-induced learning deficit in a water-maze test in rats and to increase synapse formation in the hippocampus.
Further changes to raise fat solubility produced Dihexa, which the authors described as orally active and barrier permeant, with marked synapse-forming activity and anti-dementia activity in drug-impaired and aged rat models [1]. These are rat behaviour and cell-connectivity measures. The paper does not report a human study, a plasma half-life in people or a formulation, so the library's 304 hour figure is an estimate attached to an otherwise uncharacterized compound [1][2].
In 2021 the journal published an expression of concern about this paper [1]. An expression of concern signals that questions have been raised about the reliability of the reported data. It does not retract the paper, but it is a reason to weigh the findings cautiously, and the library's research-use-only label and low-confidence timing input reflect the thin evidence [2].
| Compound | Status | Half-life input | Package example |
|---|---|---|---|
| Dihexa | Research use only, estimated model data | 304 h | Not listed |
How is Dihexa measured and converted?
With no library package and an oral route, Dihexa has no reconstitution step [2]. An oral entry is milligrams per capsule times the number of capsules, taken from whatever product label is in hand; the library holds no capsule strength, so this page leaves it as a variable [3].
The 304 hour input dominates the timing arithmetic: one modeled halving takes about 12.7 days, so about 95% of a single contribution remains after 24 hours and five half-lives span roughly 63 days [3]. That long tail is an estimate, not a human measurement, and it is not data about people. The peptide calculator serves powder vials; Dihexa has no compound-specific calculator or dosing chart.
How do people log Dihexa in PinPoint?
Dihexa is in PinPoint's library with oral and subcutaneous routes, so an entry records the route with the amount, alongside any other compounds being tracked [2][4]. Daily or custom schedules carry reminders at the chosen time [4].
Because of the 304 hour input, the Home curve accumulates over weeks of daily entries rather than resetting each day. That buildup is a mathematical visualization of a low-confidence estimate and does not account for individual variation [4][2]. Daily notes can sit beside each entry, and data can be exported as PDF, CSV or JSON [4].
Get PinPoint on the App StoreWhat do people ask about Dihexa?
- What is Dihexa?
- Dihexa is a chemically stabilized analogue of an angiotensin IV fragment, developed in a rat research program as an orally active, brain-penetrant compound. It is not an approved medicine.
- Has Dihexa been studied in people?
- The library's source is a 2013 rat study. It reports no human amount or outcome, and the journal attached an expression of concern to the paper in 2021.
- What is the Dihexa half-life in the library?
- The library uses 304 hours as a low-confidence tracking estimate. At that value, about 95% of a single modeled contribution remains after 24 hours.
- Is there a Dihexa dosage chart?
- No. The library holds no package or capsule strength for Dihexa, so there is nothing to convert. Oral entries are logged in the milligrams printed on the product label.
- What is an expression of concern on a paper?
- It is a notice from a journal that questions have been raised about the reliability of a published paper. It is not a retraction, but it signals that the findings should be weighed cautiously.
Where do these facts come from?
Sources are listed by kind: labels first, then peer-reviewed papers, then PinPoint's own library, arithmetic and app description. Library values were retrieved from the PinPoint application on 5 October 2026; vendor listings support package sizes only.
- Metabolically stabilized angiotensin IV analogs as procognitive agents, 2013J Pharmacol Exp Ther, 2013. Rodent cognition models and pharmacokinetics.Retrieved 2026-10-05 · study
- PinPoint compound library, application recordsHalf-life inputs, routes, frequencies, package examples and confidence labels as stored in the iOS app library and mirrored in the peptide guides.Retrieved 2026-10-05 · library
- Unit conversion arithmeticConcentration = amount / volume; volume = amount / concentration; U-100 units = mL x 100; remaining fraction = 2^(-elapsed / half-life).Retrieved 2026-10-05 · arithmetic
- PinPoint App Store descriptionFeature wording from the approved application description, not pricing.Retrieved 2026-10-05 · app-description