Melatonin vs DSIP
Both are discussed in sleep-related research but they are different molecules. Melatonin is an endogenous indoleamine hormone available widely as an over-the-counter supplement and in compounded forms. DSIP (delta sleep-inducing peptide) is a small peptide studied in sleep-architecture and stress contexts; it is not FDA-approved and is dispensed only in compounded form. Selection is a clinical decision.
What's being compared
Endogenous indoleamine hormone available as an over-the-counter supplement and in compounded preparations.
Small peptide studied in sleep-architecture and stress contexts; dispensed only in compounded form.
Side-by-side comparison
| Attribute | Melatonin | DSIP |
|---|---|---|
| Class | Indoleamine hormone (small molecule). | Small linear nine-amino-acid peptide. |
| Origin | Endogenous; produced by the pineal gland on a circadian rhythm. | Originally isolated from cerebral venous blood of sleeping animals; named for delta-wave sleep observations in early research. |
| Mechanism in research | Acts at MT1 and MT2 melatonin receptors involved in circadian-rhythm signaling. | Mechanism is incompletely characterized in the published literature; effects on sleep architecture and stress responses are discussed in early research. |
| Sleep context discussed in the literature | Sleep-onset and circadian-shift contexts (jet lag, shift work) dominate the published literature. | Sleep-architecture, stress, and pain contexts appear in the published literature, mostly in earlier and animal research. |
| Routes used in practice | Oral tablets, capsules, sublingual lozenges, and compounded troches. | Subcutaneous injection in clinician-directed compounded preparations. |
| Typical schedule | Taken in the evening before the desired sleep window per the clinician's or supplement-label guidance. | Per the clinician's protocol; typically administered in the evening for sleep-related contexts. |
| Regulatory status | Available over the counter as a dietary supplement in the United States; compounded melatonin products are also dispensed by 503A/503B pharmacies and are not FDA-approved drug products. | Not FDA-approved as a finished product; dispensed only by 503A/503B compounding pharmacies on patient-specific prescriptions. |
| Evidence base | Substantial published literature on circadian-rhythm and sleep-onset contexts in adults. | Limited published literature concentrated in earlier and animal research; long-term human outcomes are not established in the public literature. |
| Typical clinician use case | Considered when the clinical question is sleep-onset timing or circadian-rhythm shift, where the published literature is most relevant. | Considered by clinicians comfortable with peptide protocols when sleep-architecture or related contexts are being addressed and an injectable preparation is appropriate. |
| Regen Therapy availability | Available through Regen Therapy clinician partners; compounded melatonin preparations are dispensed by Wells Pharmacy Network when clinically appropriate after evaluation. | Included in the RT-10 (Semax / Selank / DSIP) protocol, dispensed by Wells Pharmacy Network when clinically appropriate after evaluation. |
Which one might fit?
Use the framings below as orientation only. The right therapy is determined by your prescribing clinician based on history, lab work, and the specifics of your situation.
Melatonin is the molecule with the largest published literature for that context and is the option clinicians most often consider first.
DSIP is the peptide discussed in those contexts in the published literature; whether a compounded preparation is appropriate is a clinical decision after evaluation.
Melatonin is the non-injectable option in this comparison; DSIP in the protocols discussed here is delivered by subcutaneous injection.
Talk to a clinician about which fits
Every Regen Therapy protocol is reviewed by a licensed clinician and dispensed by Wells Pharmacy Network only after evaluation. Start with a brief intake to see what makes sense for your situation.
Frequently asked questions
Are melatonin and DSIP the same kind of molecule?
No. Melatonin is a small-molecule indoleamine hormone produced by the pineal gland. DSIP is a nine-amino-acid peptide originally isolated in early sleep research. They have different chemistry, different mechanisms, and very different bodies of literature.
Is DSIP FDA-approved?
No. DSIP is not approved by the FDA as a finished product. It is dispensed only in compounded form by 503A or 503B pharmacies on a patient-specific prescription, after a clinician evaluation.
Is melatonin FDA-approved as a drug?
Melatonin in the United States is sold widely as an over-the-counter dietary supplement; it is not regulated as a prescription drug. Compounded melatonin preparations are dispensed by 503A/503B pharmacies and are not FDA-approved drug products.
Can melatonin and DSIP be used together?
Whether to combine two sleep-related protocols is a per-patient clinical decision the prescribing clinician makes after reviewing history, current medications, and goals.
How is DSIP administered?
In the clinician-directed compounded protocols discussed here, DSIP is administered by subcutaneous injection on a schedule the clinician sets, typically in the evening for sleep-related contexts.
What does Regen Therapy offer in this category?
DSIP is available through compounding partners dispensed by Wells Pharmacy Network when clinically appropriate after evaluation. Melatonin protocols are coordinated through Regen Therapy clinician partners.