Semax / selank stack: what's in it

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By Ellum EditorialPublished October 9, 2026Updated October 11, 2026AI use

The short answer

Semax / selank stack combines Semax and Selank.

The parts

Semax Index
Not FDA-approved · advisory vote July 2026 · no FDA decision
Selank Index
Not FDA-approved

Regulatory status by component

Not FDA-approved How we label status

As of October 4, 2026, Semax is not FDA-approved. On July 24, 2026, FDA's compounding advisory committee voted to recommend adding it to the 503A bulks list; FDA staff had recommended against it. FDA has not proposed that change. See Semax in the Index →
As of October 4, 2026, Selank is not FDA-approved for any use and is not on FDA's 503A bulks list. See Selank in the Index →

Status as of October 4, 2026

As a combination: No category as a combination (see components)

Semax: as of October 4, 2026 · source
Selank: as of October 4, 2026 · source

Timeline

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Date	What happened	Source
November 10, 2021	FDA warning letter to a compounding clinic states that Selank and Semax were not nominated for inclusion on the 503A bulks list.	FDA, event of November 10, 2021, on fda.gov
April 22, 2026	FDA lists semax (heptapeptide) and selank acetate (TP-7) among bulk drug substances nominated but withdrawn (previously in category 2, withdrawn by the nominators) on its page of bulk drug substances that may present significant safety risks in compounding (content current as of 2026-04-22).	FDA, event of April 22, 2026, on fda.gov
July 24, 2026	FDA presentation for the July 24, 2026 Pharmacy Compounding Advisory Committee meeting states semax products are marketed online alone and in combination with selank.	FDA, event of July 24, 2026, on fda.gov

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The research on Semax / selank stack

Key facts

Also known as: semax selank, semax selank stack, russian nootropic stack, russian stack

Parts: Semax and Selank
Route: nasal

References

Status sources

Sources as of October 4, 2026

What this doesn’t establish

Results for one compound don't tell you what the two do together.