Small Selank studies found less anxiety without heavy fog.
Small studies found signs of less anxiety. Animal work also looked at memory. You'll see what remains unknown.
Selank has early signs, not firm proof
Selank is a small lab-made chain, called a peptide. Scientists in Russia linked seven small protein pieces to make it. The body uses chains like these to pass messages. No one knows how Selank will affect you.
Small human tests reported less anxiety and little sleepiness. In blood, Selank slowed the loss of natural pain-easing chemicals [1][2]. Animal work looked at learning and memory. Those early results can't foretell your own response.
People using Selank for research often report a clear calm. Some people say they felt nothing at all. The FDA hasn't approved Selank as a medicine. Read both kinds of reports on the effects page, then compare stories with study facts.
Selank helped a brain chemical that slows busy nerves
A 2018 review looked at Selank and a brain chemical that slows busy nerves. The review found that Selank helped that chemical work [1]. It didn't behave like the older anxiety drugs used in the test.
In a human blood sample, Selank slowed the loss of natural pain-easing chemicals [2]. At 15 micromoles per liter, it cut that loss by half. A micromole is a tiny lab amount, and this figure can't guide care.
In rats, Selank raised a protein that keeps brain cells healthy and able to adjust [3]. The rise appeared in the area used for memory. The test didn't show better memory in people.
One rat test used 300 micrograms for every kilogram the rat weighed; a microgram is one millionth of a gram. After one hour, scientists found 45 differences in how brain cells used gene instructions. They found 22 after three hours [4]. The test didn't show whether those differences helped or harmed the rats.
Russian scientists made the Selank peptide
Two Russian institutes made Selank. Scientists copied part of a natural protein that guides the immune system. They added more linked pieces so the body would break Selank down more slowly. Scientists called the seven-piece chain TP-7, a lab name [6].
Human tests started by the late 1990s, when Russian teams gave nose drops to anxious people. Some also had deep tiredness with their anxiety. The reports found relief close to the comparison drug. People didn't show the same fog or withdrawal [6].
All those human tests came from one region. That makes checks from other countries important. The reports also covered only short spans. Read more on Selank research.
Animals stayed alert while anxiety signs fell
Older anxiety drugs can cause sleepiness and dependence. Selank was tested for calm without that trade-off. Some rats were bred to show anxiety; others became anxious after stress [13]. Selank eased signs in both groups, and the animals stayed alert.
Other studies looked at withdrawal from alcohol. Selank eased anxious behavior in rats [8]. It also curbed alcohol-driven overactivity in mice [9]. These findings haven't been proved in people, so you couldn't use them to plan care.
A 2022 study tested morphine withdrawal in rats. The rats showed fewer signs of distress [11]. No human trial confirmed the same effect. Read the full account on Selank withdrawal.
Each page answers one Selank question
Start with Selank research for the study findings. That page names whether people, animals, or blood were tested. Selank effects separates user reports from known risks. The dosage page lists study amounts, not advice.
Every paper appears under Selank references. A separate page covers Selank vs Semax. You can choose the question that brought you here. Each page also marks where the facts run out.