Peptides for Brain Health
Peptides for brain health point to Dihexa or Semax & Selank. Dihexa is a small molecule built from a brain peptide and it is studied for rebuilding the connections between brain cells.
Ordering these peptides online is easy once you have created a free account with one of the vendors below.

When will I get my order?
- Depending on the vendor your order from, you will receive your peptides within 7 business days. Here is shipping speed by vendor:
- Amino Club: 3 ot 5 Business Days
- EZ Peptides: 5 to 7 Business Days
- Ascension: 5 to 7 Business Days

What Is Dihexa and how does it help brain health?
Dihexa came out of a lab at Washington State University. Chemists started with angiotensin IV, a brain peptide tied to memory.
They rebuilt it to survive in the body and reach the brain. It acts on a growth factor system that helps brain cells form new links. Those links are what memory is built on.

How Strong Is the Evidence?
Only animal evidence exists, which matters. Dihexa improved learning in rats with damaged memory systems. It also grew more links between brain cells. A 2021 study reported recovered memory in a mouse model of Alzheimer’s. There is no human trial, no dosing data in people, and no long-term safety record. The table below is a brief summary of the research.

| Finding | Model |
|---|---|
| Improved cognition and new synapses | Rat studies (2014) |
| Rescued memory in an Alzheimer’s model | Mouse study (2021) |
| Designed as a memory drug | Medicinal chemistry work (2012) |
| Human trials of any kind | None published |
What this evidence does not cover
None of these studies involved people. A compound that pushes growth signals in the brain needs careful safety work. None has been published so far and nothing is FDA approved. Sleep, exercise, blood pressure, and hearing care all have far better evidence for protecting a brain. Research vials are not medicine.
Primary sources
- Procognitive and synaptogenic effects of angiotensin IV analogs — 2014
- Dihexa rescues cognitive impairment in the APP/PS1 mouse — 2021
- Evaluation of stabilized angiotensin IV analogs as antidementia agents — 2012
What Does Dihexa Cost?
Dihexa runs $60 to $110 for a 10 to 20mg vial. It is harder to make than a plain short peptide, so it costs more than most.
Prices well below that range usually mean skipped testing or short-filled vials. Find a vendor below to order from a 3rd party tested provider.

Ready to order Dihexa?
Research use only. Third-party tested, shipped in 3 to 5 business days.