The anxiety evidence
What the anxiety studies tell us
Look at what was compared before reading the result.
The human anxiety evidence includes small Russian studies with important gaps in what they can establish.
What the anxiety studies compared
A Russian study from 2008, involving 62 people with anxiety-related conditions, compared Selank against the older calming medicine medazepam.
Its summary reported similar effects on anxiety from the medicines.
The English summary describes no placebo group, meaning people given a dummy treatment for comparison.
Without that comparison, this study does not answer whether Selank helps more than no treatment. It does not prove that Selank failed to help.
An add-on is a different question
A study published in 2015 included 70 people and compared phenazepam, a calming medicine, with phenazepam plus Selank.
The authors reported earlier benefit and fewer unwanted effects from phenazepam in the combined-treatment group.
This tests adding Selank to another drug; it does not establish the effect of Selank alone.
That summary also describes no dummy-treatment group.
A brain scan is not symptom relief
The placebo comparison found in a September 2026 research search was a brain-scan study in healthy people.
The reported scan changes do not establish relief from anxiety.
Ask whether people felt less anxious, or whether only their brain scans changed. Ask which result supports the treatment being offered.
The summaries leave questions open
The available English summaries leave details of the anxiety studies open.
The summaries do not say whether chance, rather than someone’s choice, decided who got each treatment. That leaves a question about how fairly the groups were compared.
Ask whether one group might have started with less severe anxiety than the other. Ask how the missing details affect the doctor’s trust in the result.