Semax and Selank for brain health: what the science actually says

What did @drjonesdc actually say?

Honestly? Nothing coherent about peptides. The transcript from this video is not medical commentary. It appears to be song lyrics or spoken-word content with no discernible health claims whatsoever. The caption promises a "BRAINBLAST" from Semax and Selank, but the actual audio contains lines like "screaming to die in" and "slam em all in, man." There is no peptide science in this transcript. None.

This matters because the fact-check has to be grounded in what was actually said, not what the caption promised. The hashtags gesture toward GLP-1 medications and brain health, and the caption name-drops two peptides with real (if limited) research behind them. But the creator did not explain what Semax or Selank do, what doses might be used, or who might benefit. The video is essentially a vibe with a peptide brand attached to it.

Does the science back this up?

There is legitimate, if preliminary, research on both peptides. The problem is that none of it was cited here, because nothing was actually claimed here. Semax is a synthetic analogue of ACTH(4-7) developed in Russia, and it has been studied for cognitive function, neuroprotection, and stroke recovery. Selank is a synthetic analogue of tuftsin with anxiolytic properties studied in Russian clinical trials.

Semax research includes work by Dolotov et al. (2006, Journal of Neurochemistry) showing increased BDNF expression in rodent models. Selank has been evaluated in small Russian trials for generalized anxiety disorder, including work published by Zozulya et al. (2014, Drug Des Devel Ther). Both peptides are approved in Russia as medications. Neither is FDA-approved in the United States. Most human data comes from small, older Russian studies that have not been replicated in large Western randomized controlled trials. Calling either peptide a proven "brainblast" is an overclaim the evidence does not support.

What did they get wrong (or right)?

The caption framing is where the problem lives. Describing Semax and Selank as something that has you "covered" for a brain boost implies a reliability and certainty that the research does not justify. That is misleading, even if the creator never technically said it aloud in the video.

What the creator did not get wrong is harder to assess because they said nothing substantive. They did not make dosing claims. They did not say these peptides cure diseases. They did not recommend stacking them with other compounds. In a strange way, saying nothing protected them from making false claims. But a 60,000-view video with the caption "Semax/Selank have you covered" is still communicating something to an audience that may not distinguish caption from content.

The hashtag "glp1medication" is also worth flagging. Semax and Selank are not GLP-1 receptor agonists. Tagging them that way to capture GLP-1 search traffic is misleading at minimum.

What should you actually know?

If you are curious about Semax or Selank, here is a grounded summary. Semax has shown some neuroprotective effects in animal and small human studies, particularly around BDNF upregulation and post-stroke recovery. Selank has anxiolytic properties in rodent models and small human trials. Neither has robust Phase III trial data from Western regulatory agencies.

Both are available through compounding pharmacies in the US, but compounded peptides are not FDA-approved drugs and quality control varies significantly between suppliers. If a provider recommends either peptide, ask for the specific evidence they are basing that on and whether it applies to your health situation. A viral TikTok with no spoken health claims is not a substitute for that conversation.

• Neither Semax nor Selank is FDA-approved for any indication in the United States.
• Existing human trials are mostly small, older, and conducted in Russia with limited independent replication.
• "Brainblast" is not a clinical outcome measure recognized by any regulatory body.
• The GLP-1 hashtag has nothing to do with either peptide and appears to be audience-capture tagging.