DSIP vs Humanin
Comprehensive side-by-side comparison of mechanisms, dosing, side effects, and research
Also: Delta Sleep Inducing Peptide, Delta Sleep-Inducing Peptide
DSIP, or delta sleep-inducing peptide, is a small naturally occurring nonapeptide (sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) first isolated in the 1970s from the blood of sleeping rabbits. As the name suggests, it was named for its ability to promote delta-wave (deep, slow-wave) sleep in animals. Despite five decades of study it has no regulatory approval and the human evidence for it as a sleep aid is weak and inconsistent.
Also: HN, HNG (S14G-humanin)
Humanin is a 24-amino-acid peptide encoded inside mitochondrial DNA (in the 16S rRNA gene), discovered in 2001 and named for its ability to protect human neurons from Alzheimer-related cell death. It was the first member of the mitochondrial-derived peptide family and is studied mainly for neuroprotection, cell survival, and metabolic and age-related disease. The honest status: it has the deepest preclinical evidence base of any mitochondrial peptide, but human therapeutic trials are essentially absent.
Key Comparison Insights
- Both peptides belong to the Anti-Aging category, suggesting similar primary applications.
- DSIP has stronger research evidence (Human Trials) compared to Humanin (Animal Studies).
Detailed Comparison
| Attribute | DSIP | Humanin |
|---|---|---|
| Category | Anti-Aging | Anti-Aging |
| FDA Status | Not FDA Approved | Not FDA Approved |
| Clinical Status | Pre I II III IV FDA | Pre I II III IV FDA |
| Mechanism of Action | How DSIP actually works is still not nailed down, which is unusual for a peptide this old. It does not have one clear receptor of its own. Instead it seems to act as a modulator, influencing slow-wave sleep, neurotransmitter levels, circadian rhythm, hormone release (including growth hormone), and stress responses. One striking animal finding: injecting antibodies against DSIP into the brain blocked the normal rise in slow-wave sleep and growth hormone, hinting that the body's own DSIP plays a real regulatory role. Some reports also suggest it can act on opioid-related pathways, which is why it has been studied in addiction withdrawal. Treat these mechanisms as plausible but not fully proven. | Humanin is fundamentally a cell-survival signal that blocks apoptosis, the programmed self-destruct cells run when stressed. It binds a trimeric receptor complex made of CNTFR, WSX-1, and gp130 on the cell surface, switching on JAK2/STAT3 survival signaling. Inside the cell it directly grabs the pro-apoptotic protein BAX and stops it from moving to the mitochondria and punching holes in the membrane, which is the step that would otherwise commit the cell to death. It also binds IGFBP-3, modulating IGF-1 signaling and further dialing down apoptosis, and it interacts with formyl peptide receptors. The throughline across all of these is the same: keep stressed cells alive and protect mitochondria. |
| Common Dosing | 100-250 mcg before bed Once daily, 30 min before sleep | 5-10 mg weekly divided into 2-3 injections 2-3x weekly (e.g., Monday, Wednesday, Friday) |
| Administration | Subcutaneous, intramuscular, or intranasal | Injection (route varies) |
| Typical Duration | 2-4 weeks typical | Variable |
| Best Time to Take | 30-60 minutes before bed | Morning |
Possible Side Effects May vary by individual |
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| Research Summary | The early animal work was genuinely interesting: DSIP reliably increased delta sleep in rabbits, rats, and mice, and seemed tied to growth hormone release during sleep. The human data is far less convincing. A few small studies reported longer or better sleep after intravenous DSIP in chronic insomniacs, with no daytime grogginess. But a double-blind, placebo-controlled study published in Neuropsychobiology (1992) concluded that short-term DSIP treatment of chronic insomnia is unlikely to be of major therapeutic benefit, since objective gains were weak and patients did not feel their sleep was better. Separate older reports claimed high success rates relieving opiate and alcohol withdrawal symptoms, but these were small, uncontrolled, and never replicated to modern standards. Bottom line: real history, real animal data, but no solid randomized evidence that it works as a sleep drug in people. | Humanin is one of the best-characterized mitochondrial peptides in the lab, with a large body of in vitro and animal work. It protects neurons against amyloid-beta toxicity, shields retinal pigment epithelium cells from oxidative stress and senescence, and shows protective effects in models of cardiovascular disease and diabetes. Circulating humanin declines with age in humans, and some studies link higher endogenous levels to better metabolic and longevity markers, which fuels the longevity interest. But that is association and animal data, not proof that taking humanin treats any disease. There are no large completed randomized human trials demonstrating clinical benefit, and most of what is sold to consumers is synthetic humanin or analogues like HNG, used far ahead of the evidence. It is a compelling research molecule, not a validated drug. |
Frequently Asked Questions: DSIP vs Humanin
What is the difference between DSIP and Humanin?
DSIP is a anti-aging peptide that dsip, or delta sleep-inducing peptide, is a small naturally occurring nonapeptide (sequence trp-ala-gly-gly-asp-ala-ser-gly-glu) first isolated in the 1970s from the blood of sleeping rabbits. as the name suggests, it was named for its ability to promote delta-wave (deep, slow-wave) sleep in animals. despite five decades of study it has no regulatory approval and the human evidence for it as a sleep aid is weak and inconsistent. Humanin is a anti-aging peptide that humanin is a 24-amino-acid peptide encoded inside mitochondrial dna (in the 16s rrna gene), discovered in 2001 and named for its ability to protect human neurons from alzheimer-related cell death. it was the first member of the mitochondrial-derived peptide family and is studied mainly for neuroprotection, cell survival, and metabolic and age-related disease. the honest status: it has the deepest preclinical evidence base of any mitochondrial peptide, but human therapeutic trials are essentially absent. The main differences lie in their mechanisms of action and clinical applications.
Which is better, DSIP or Humanin?
Neither is universally "better" - the choice depends on your specific goals. DSIP is typically used for anti-aging purposes, while Humanin is used for anti-aging. Always consult with a healthcare provider to determine which may be appropriate for your situation.
Can DSIP and Humanin be used together?
Some peptide protocols combine multiple compounds for synergistic effects. However, using DSIP and Humanin together should only be considered under medical supervision, as both compounds have their own side effect profiles and potential interactions. Research on their combined use may be limited.