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DSIP vs Selank
DSIP and Selank are both cognitive / nootropic peptides, which is why they get recommended interchangeably — but they are different compounds with different origins. A mixed vial also keeps differently: about 30 days for DSIP against 28 for Selank. The table below sets out the differences. We give no dosing guidance.
Side by side, in plain English — what each one is, where they overlap and where they genuinely differ.
DSIPCognitive / Nootropic
SelankCognitive / NootropicAt a glance
| DSIP | Selank | |
|---|---|---|
| Category | Cognitive / Nootropic | Cognitive / Nootropic |
| Typical route | SubQ | SubQ (or nasal) |
| Shelf life once mixed | ~30 days | ~28 days |
| Commonly reported effects | Deep sleep Stress reduction Recovery | Reduced anxiety Improved focus Mood stabilization |
| Reported considerations | Rare morning grogginess | Very rare Occasional drowsiness |
The differences that actually matter
Both are classed as Cognitive / Nootropic peptides, so they get compared constantly and are often researched for overlapping reasons.
Route of administration differs — DSIP is typically subq, Selank is typically subq (or nasal). That alone changes how convenient each one is to keep up with.
Reported mainly for DSIP: deep sleep, stress reduction, recovery.
Reported mainly for Selank: reduced anxiety, improved focus, mood stabilization.
What DSIP is
Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring nonapeptide first isolated from the cerebral venous blood of rabbits. Its precise mechanism of action is still being elucidated, but research suggests it may exert its effects through complex interactions with various neurotransmitter systems within the central nervous system, including serotonergic, dopaminergic, and opioid pathways. While direct receptor targets are not definitively identified, DSIP is thought to modulate brain activity to support the h
What Selank is
Selank is a synthetic anxiolytic heptapeptide developed in Russia, structurally related to the endogenous immunomodulatory peptide tuftsin. Its proposed mechanism of action involves modulation of the GABAergic system, particularly influencing the function of GABAA receptors. Beyond this, Selank has been observed to affect the metabolism and balance of monoamines, such as serotonin, dopamine, and norepinephrine, across various brain regions. It is also believed to inhibit enkephalin-degrading enzymes, potentially le
How to compare them for yourself
Anecdotes online are noisy because nobody is measuring the same thing. The only comparison that means anything is your own: log each entry with a timestamp, keep the vial ledger honest so you know what you actually got through, pick two or three metrics before you start, and look at the trend after several weeks rather than day to day.
Peptide Wizard does that part for you — DSIP and Selank are both in the built-in reference library with a 3D vial, and your history, vial ledger and cost per entry stay private on your device.
FAQ
What is the difference between DSIP and Selank?
Both are classed as Cognitive / Nootropic peptides, so they get compared constantly and are often researched for overlapping reasons.
Can you log DSIP and Selank in the same period?
Plenty of people record more than one peptide at a time. Peptide Wizard keeps a separate vial ledger and entry history for each, so you can see exactly what overlapped and when — it does not recommend combinations or doses.
Which is better, DSIP or Selank?
There isn't a universal answer — reported responses vary a lot between individuals, which is why your own log is more informative than anyone else's anecdote. Track one variable at a time and compare your own metrics over several weeks.
Is this medical advice?
No. This page is educational reference material only. It contains no dosing guidance. Speak to a qualified healthcare professional before making any decisions.
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Educational reference only. This page contains no dosing guidance and is not medical advice.