DSIP
otherDSIP is a research-use-only peptide. PeptideSource compares suppliers on purity, COAs, and price-per-mg.
Also known as: Delta Sleep-Inducing Peptide, Delta Sleep Inducing
Delta Sleep-Inducing Peptide, known as DSIP, was first isolated from the pituitary gland of rabbits, where it naturally occurs. This peptide is a nonapeptide with intriguing effects on sleep regulation. It functions by modulating various neurophysiological processes, including influencing the sleep-wake cycle and reducing stress-related symptoms. Research on DSIP began with its potential to induce slow-wave sleep, sparking interest in its role in sleep disorders and neuroendocrine regulation. Today, it is primarily studied for its effects on:
- Sleep regulation
- Neuroendocrine modulation
- Stress reduction
PeptideSource editorial · Updated Jul 18, 2026
For research use only. PeptideSource does not sell peptides directly. Compare third-party supplier listings at your own discretion.
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| Product | DSIP - | DSIP | DSIP | DSIP | DSIP Delta Sleep-Inducing | DSIP | DSIP | DSIP | DSIP | DSIP | DSIP | DSIP Nasal Spray -100Sprays: | DSIP | DSIP | DSIP Delta Sleep-Inducing | DSIP Spray | Delta Sleep-Inducing DSIP |
| Size | 10 mg | 10 mg | 10 mg | 5 mg | 5 mg | 5 mg | 5 mg | 5 mg | 10 mg | 5 mg | 5 mg | 5 mg | 5 mg | 5 mg | |||
| Price | $17.00 | $48.75 | $49.00 | $49.99 | $29.00 | $305.00 | $34.99 | $35.00 | $39.99 | $44.00 | $89.00 | $44.99 | $49.00 | $50.00 | $57.99 | $60.99 | $24.95 |
| Price/mg | $3.40/mg | $4.88/mg | $4.90/mg | $5.00/mg | $5.80/mg | $6.10/mg | $7.00/mg | $7.00/mg | $8.00/mg | $8.80/mg | $8.90/mg | $9.00/mg | $9.80/mg | $10.00/mg | $11.60/mg | $12.20/mg | $12.48/mg |
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| Stock | In stock | In stock | Out of stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock | In stock |
| Shipping | Same-day dispatch before 1PM PST | 2–3 days | 2–5 days | UPS 2nd Day Air | Same-day dispatch before 12PM EST | Reliable US shipping | UPS 2-Day | Same-day dispatch before 12PM CT | Same-day US shipping | Same-day dispatch | US shipping | Same-day US shipping | Same or next-day shipping | Same/next-day dispatch | 5–7 days | 5–7 days | 3–5 days |
| Reviews | — | 5.0(22) | 4.8(271) | 5.0(6) | 5.0(1) | 5.0(3) | 4.8(75) | 4.6(63) | 4.7(31) | 4.9(15) | 5.0(9) | 4.7(31) | 4.2(46) | 1.0(4) | 4.3(159) | 4.3(159) | 2.6(12) |
| Purity | 99% | 99% | 99.06% | 99% | — | 99.99% | 99% | — | 99% | 99% | 99% | 99% | — | 99% | 99% | — | 99% |
| COA | — | — | — | — | — | — | |||||||||||
| Bulk discount | — | — | — | — | — | — | — | 10% off (3+) | — | — | — | — | — | — | — | — | — |
