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Someone asked whether to use Semax, Selank, or both, and whether these peptides would feel stimulating or sedating, and if they could cause addiction. The short answer: studies and user reports suggest Semax tends to be more stimulating and Selank more calming, but evidence is limited. Neither is known to cause the classic “high” of opioids or cannabis, and there's little proof they cause addiction in the way those drugs do — but research is thin and individual reactions vary, so caution is sensible, especially with a history of substance use. Semax and Selank are small protein-like molecules called peptides. They were developed in Russia and are used there and in some research settings for things like cognitive problems, anxiety, and recovery after brain injury. Semax is often described as alerting or attention-enhancing; it’s thought to boost certain brain proteins and neurotransmitter systems involved in attention and memory. Selank is usually described as anxiolytic (anxiety-reducing) and calming; it’s thought to affect stress-related pathways and aspects of the immune system. Neither is the same as classic stimulants (like amphetamines) or depressants (like benzodiazepines). What the research actually shows: most human studies are small, sometimes not randomized, and many data come from animal research or clinical use in Russia. Semax has shown modest improvements in attention, memory, and recovery after stroke in limited trials. Selank has shown reductions in anxiety-like measures and may help with stress and some cognitive aspects. Importantly, there’s no strong evidence either produces euphoria or the reinforcing effects that lead to addiction the way opioids, alcohol, or benzodiazepines can. But the studies are not large or long enough to fully rule out subtle dependence or withdrawal effects, and individual experiences (including online reports) vary widely. Why it matters: if you’re restless and have ADHD-like symptoms, you might be tempted by something described as “stimulating” or “calming.” Semax could theoretically help with focus for some people, while Selank might help with anxiety and reduce restlessness. For someone concerned about relapse to substance use, the fact that these peptides are not known to be addictive is encouraging, but it’s not a guarantee. They might offer symptom relief without the intoxication and reward that triggered past drug use for you, but results aren’t guaranteed. Caveats and risks: neither peptide is approved as a prescription treatment for ADHD or off-label use in many countries. Quality and purity of products sold online can vary. Side effects reported are generally mild (headache, nasal irritation when administered intranasally), but long-term safety data are lacking. Because you have a history of opioid and cannabis use, discuss this with a medical professional who knows your history before trying anything new. Also consider that addressing ADHD and anxiety often works best with established treatments (therapy, stimulant or nonstimulant ADHD medications) and behavioral strategies rather than unproven peptides. Bottom line: Semax might help focus and Selank might calm anxiety, but evidence is limited and neither is a proven, safe substitute for established treatments; consult a clinician before trying them, especially with a past addiction.
Source: r/Nootropics