What did @kristinastout actually say?
She made three core claims: DSIP "increases your delta waves to help you fall asleep faster and stay asleep for longer," it can help people who "wake up at 3 a.m. and cannot go back to sleep," and it has shown benefit for "cortisol, mood and stress levels." She also disclosed her pricing and sourcing from a 503A compounding pharmacy.
To her credit, she did not promise a cure, she disclosed her credentials as a nurse practitioner, and she named her clinic. That is more transparency than most peptide TikToks offer. The problem is not what she disclosed, it is what the science actually says about DSIP, which is considerably messier than a 60-second video can capture.
Does the science back this up?
Partially, and with significant caveats. The evidence for DSIP in humans is thin, dated, and largely inconclusive. Most people citing DSIP's sleep benefits are drawing on animal studies and a small body of human research from the 1980s.
DSIP was first isolated in 1977 by Monnier and colleagues from rabbit cerebral venous blood during slow-wave sleep. Early animal studies did show increases in delta-wave activity after administration. However, a 1984 review by Iyer and colleagues in Neuroscience and Biobehavioral Reviews noted that DSIP's sleep-promoting effects were inconsistent across species and experimental conditions. The peptide also has a very short half-life in plasma, which raises serious questions about whether subcutaneous injection produces meaningful central nervous system activity at all. A 1990 study by Steiger and colleagues in Journal of Sleep Research found no significant sleep-promoting effect in healthy volunteers. The cortisol angle has some biological plausibility, with some rodent data suggesting DSIP modulates stress hormone release, but again, robust human trials are absent.
What did they get wrong (or right)?
The claim that DSIP "increases your delta waves" is technically drawn from real research but is being presented with more confidence than the data supports. The human evidence for this specific effect is weak. Saying this is the peptide for people who "wake up at 3 a.m." is a marketing statement, not a clinical recommendation, and it implies a specificity of action that no published trial has demonstrated in humans.
What she got right: disclosing sourcing from a 503A pharmacy is relevant and appropriate. Compounded peptides are not FDA-approved drugs, and knowing the pharmacy type matters for safety. She also correctly framed cortisol and stress as related to sleep quality rather than claiming DSIP directly fixes a sleep disorder, which is a meaningful distinction. The pricing disclosure is also a positive, though $275 for a five-week supply of a peptide with limited human evidence is a figure patients should weigh carefully.
- Right: credentials disclosed, pharmacy sourcing named, cortisol-sleep connection is biologically reasonable
- Wrong: overstates certainty of delta-wave effects in humans, implies specificity of use case without clinical trial support
- Unclear: whether reconstituted compounded DSIP maintains stability and bioavailability is not addressed
What should you actually know?
DSIP is not FDA-approved for any indication. It is not a scheduled substance in the United States, but it exists in a regulatory gray zone. Anyone considering it should understand that the human clinical evidence is genuinely sparse, most of it is decades old, and the peptide's pharmacokinetics remain poorly characterized in living humans outside laboratory settings.
Sleep problems that cause someone to wake at 3 a.m. have a range of causes, including sleep apnea, cortisol dysregulation, anxiety, and hormonal shifts, and none of those are reliably addressed by a peptide with a questionable half-life and inconsistent research results. Before spending $275, a patient would be better served by a sleep study, cortisol testing, and a conversation about CBT-I, which has actual Level 1 evidence behind it (Trauer et al., 2015, Annals of Internal Medicine). DSIP might eventually prove useful as the science matures. Right now, the gap between the confidence of this video and the actual evidence is wide enough to matter.