What the research shows

A 2014 paper proposed that Dihexa affected synapses through the HGF/c-Met pathway. The journal retracted that paper in 2025. Its figures and conclusions should be excluded when judging whether the mechanism has been demonstrated. Read the paper’s retraction record.

A different early paper about stabilized angiotensin IV analogues received a notice of concern. It is important to check the journal notice attached to each individual paper when tracing a claim about Dihexa. Read the separate notice of concern.

Documented formats

These records describe experimental materials. A reference to oral activity in an early animal paper does not establish the performance of a particular capsule or liquid in humans.

Testing and purity

Check that the structure includes its terminal modifications. An assay comparing a sample with unmodified angiotensin IV cannot by itself establish Dihexa’s identity.

How to read a batch report

Questions about Dihexa

Why does an old summary still cite a retracted result?

A citation can remain in an older review after the journal updates the original record. Follow the link to the paper and check its current publication notice.

Does measuring a peptide’s identity validate a claimed effect on memory?

Identity can establish which material is present in a sample. Establishing a memory effect requires reliable experiments with appropriate comparators and outcomes.