Nootropic · 10mg × 10 vials
In plain terms: Semax + Selank Combo (pre-blended) is a research compound - oral, long-acting and well studied.
The Semax + Selank blend is a single-vial pre-mixed format of the canonical Russian neuropeptide pair, designed so a customer running both can do one reconstitution and one draw per dose instead of two. The two peptides hit completely separate pathways with no receptor overlap, which is why they were paired in the first place and why they can be safely co-formulated.
Semax (Met-Glu-His-Phe-Pro-Gly-Pro, a stabilized ACTH 4-10 fragment) drives the "gas" half of the stack: it acutely upregulates BDNF and NGF gene expression in the hippocampus and basal forebrain, modulates dopaminergic and serotonergic tone in the limbic structures, and inhibits enkephalin-degrading enzymes to raise endogenous opioid signaling. Functionally that is focus, motivation, working memory, and mood drive without the stimulant edge.
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro, a stabilized tuftsin analog) drives the "brakes" half: it upregulates GABA-A receptor expression and amplifies inhibitory tone without binding the benzodiazepine site, with a parallel serotonergic arm via 5-HIAA metabolism and BDNF upregulation in the hippocampus. Functionally that is anxiety reduction, baseline mood stability, and emotional smoothing without sedation or dependence.
Run together the two cover the alerting and calming axes simultaneously. Semax sharpens attention but can in isolation amplify anxious focus in already-anxious users; Selank takes that edge off while leaving the cognitive lift intact. The community shorthand on r/Nootropics is "Semax for the gas, Selank for the brakes". The pre-blended kit is just the logistics convenience: one vial, one reconstitution, one syringe per dose, same total active ingredient as buying SX + SK separately.
Typical dose ranges by experience level - educational reference. Message us and we tailor it to you.
Both arms should be felt within the first 1-3 doses, Semax acute focus/alertness within 15-60 min, Selank anxiety softening within 20-60 min. If neither is felt, dose is too low or absorption is off (intranasal varies more than SubQ). Standard quote in DMs is 300 mcg of each daily SubQ in the morning.
This is the working band for daily cognitive performance + anxiety coverage. The community sweet spot on r/Nootropics is 600-800 mcg/day total of each peptide split twice - higher doesn't linearly improve effect and can flatten the emotional range. The combo kit is sized for this band: an XS20 (20 mg total) at 1 mg/day combined runs ~20 days; at 500 mcg/day combined it runs ~40 days.
Above ~1 mg/day of each peptide there is no documented additive benefit; both arms plateau in dose-response. Advanced use is more about timing and stack design (DSIP for sleep on top, PE 22-28 for additional mood) than raw dose escalation. Cycle breaks at this level are dictated by Semax tachyphylaxis, not Selank - the Selank arm could run continuously, but since the kit is co-formulated, the whole stack pulses together.
Straight talk - what people actually report, and what the studies measured.
Peer-reviewed studies and clinical guidelines - tap any to read the source.
practitioner framing of Semax + Selank as the canonical neuropeptide pair
Read study ↗Physician commentaryTailor Made Compounding clinical brief on Semax and Selankcompounding pharmacy positioning for the pair
Read study ↗Aggregated sentiment from public forums & socials - real-world reports, not individual endorsements.
Acute focus + calm in the same dose: most-reported effect, often described as "the gas and the brakes at the same time", "lifted but not anxious", "sharper without the edge"
Talkativeness / mild extraversion bump from the Semax half, reliably reported especially in introverted users
Mood elevation reported as "calm motivation" - the combo arguably produces a cleaner subjective profile than either peptide alone because Selank smooths the dopaminergic edge of Semax
Tachyphylaxis: the Semax half loses subjective punch after 4-8 weeks continuous, the Selank half does not. Real-world consequence is the combo stack feels increasingly Selank-dominant after week 6 if cycled poorly. Pulse the kit (4-8 wk on, 1-2 wk off) to avoid this.
- Divergence: No Russian clinical literature flags tachyphylaxis because trial durations are typically 10-14 days. Community consensus across r/Nootropics is universal that Semax needs pulsing; literature doesn't.
Vivid dreams: occasional, more from the Semax arm at higher doses
Route: intranasal (Russian clinical standard for both peptides) or SubQ (Western community standard)
Storage: refrigerated, ~14-21 days after reconstitution. Stability is limited by the Semax half (Selank is more stable; the blend is bottlenecked by Semax's tolerance for reconstituted storage). Lyophilized vials room-temp short-term, refrigerated long-term.
Notes: AM and midday dosing only. The Semax half is alerting/dopaminergic and will disrupt sleep latency if dosed past mid-afternoon. The Selank half is non-sedating so it doesn't offset that. Light-sensitive once reconstituted; keep in a dark fridge compartment. The pre-blend is a convenience format, not a dose-locking format: every dose pulled delivers a 1:1 ratio of Semax to Selank, so customers who want to bias the ratio (e.g., more Selank than Semax) need to buy SK and SX separately and dose each.