Complimentary Shipping Over $150
Compounded to Order
Ships Monday & Wednesday · 2-Day Air
Drift into deep, restorative sleep with a peptide designed to calm the mind and relax the body. DSIP (Delta Sleep-Inducing Peptide) naturally supports your sleep cycle, helping reduce stress and improve sleep quality without morning grogginess. Experience a smoother transition into rest, deeper recovery overnight, and a refreshed, balanced state when you wake.
Choose Your Pack
Physician reviewed before fulfillment · Free shipping over $150
What to Expect
Nights 1 – 3
You may notice vivid dreams as your sleep cycles begin to adjust. This is normal and typically settles within a few nights.
Week 1 – 2
Deeper sleep onset and less time lying awake. Most customers notice they're falling asleep faster and waking less throughout the night.
Week 4 – 8
Consistent sleep architecture and improved daytime energy. Circadian rhythm stabilizes, supporting better mood, focus, and physical recovery.
* Individual results may vary. These statements have not been evaluated by the FDA.
What It Does
Delta Sleep-Inducing Peptide — a naturally occurring compound that works with your body's own rhythms to promote deep, restorative sleep without sedation or dependency.
Enhances deep, restorative sleep and promotes healthy circadian rhythm regulation — so you wake up actually rested, not just having logged hours in bed.
Lowers cortisol levels and supports a calm nervous system response — helping your body and mind transition into a restful state naturally, without sedatives or dependency.
May help normalize stress-related hormone activity, including cortisol and growth hormone regulation — supporting overall endocrine balance during sleep cycles.
Promotes muscle and tissue repair during rest — making DSIP particularly valuable for active individuals, athletes, and anyone who needs their body to recover effectively overnight.
Supports daytime alertness and mental clarity through better-quality sleep — because when your nights improve, your days follow. Customers report sharper focus and more stable mood after consistent use.
Reduces oxidative stress and supports cognitive resilience — protecting neuronal health during the critical repair and consolidation processes that occur during deep sleep stages.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The Science
Unlike melatonin or sedatives that force sleep, DSIP works with your body's natural sleep-wake architecture — enhancing the quality and depth of sleep you're already capable of.
Administer 1 spray into each nostril approximately 30 to 60 minutes before bedtime. The nasal mucosa absorbs DSIP rapidly — bypassing the digestive system and entering the bloodstream without first-pass metabolism. Lay down immediately after administration to maximize absorption.
Once absorbed, DSIP helps lower cortisol — the primary stress hormone that keeps the nervous system in an activated state. By modulating the HPA axis, DSIP supports the physiological transition your body needs to enter and sustain deep sleep stages.
DSIP promotes deeper slow-wave sleep — the stage where physical recovery, hormone regulation, and memory consolidation occur. Unlike sedatives that suppress sleep architecture, DSIP enhances its natural depth and quality without blunting REM cycles.
With consistent nightly use over 4 to 8 weeks, DSIP helps recalibrate your body's circadian rhythm and sleep-wake cycle. Most customers report noticeable improvements within the first few nights, with sustained deeper sleep and improved daytime function building over the full protocol.
Why Lavi MD
Most peptide suppliers prioritize volume over patients. We were built differently — by a physician, for patients.
Physician on Staff
Sasson Moulavi, MD
Dispensing Physician · Chayim Therapeutics, LLC
West Palm Beach, FL
"Every product we offer is something I would prescribe to my own patients. Our formulations are designed for clinical outcomes — not marketing claims."
How We Operate
Built by a Physician, Not a Marketing Team
Lavi MD was founded under physician supervision. Every formulation, every dose, every protocol is reviewed by Dr. Moulavi before it reaches a patient — not outsourced to a contract manufacturer with no clinical input.
We Ship 2-Day Air, Monday & Tuesday Only
We only ship Monday and Tuesday, and every order placed in that window goes out 2-Day Air. That's a deliberate decision. It keeps your order moving quickly and arriving before the weekend, instead of sitting in a carrier facility for days. Most brands don't think that far ahead.
We Treat You Like a Patient, Not an Order Number
Our team includes clinical staff who understand what you're taking and why. If something goes wrong with your order — a warm shipment, a missing component, a question about your protocol — we fix it. No automated runaround.
Important — read before opening
Your spray ships in two parts. Take 60 seconds to assemble before first use.
Check Your Package Contents
Your nasal spray ships in two parts: the bottle and the pump mechanism. Both are inside the box, protected by the inner packaging. Do not discard anything until you have located both pieces.
⚠️ Do not throw away any packaging until you have fully assembled your spray.
Remove the Protective Cap From the Pump
Locate the pump mechanism inside the box. It will have a small protective cap covering the nozzle tip. Remove it and set it aside — you will reuse it to seal the spray between doses.
Attach the Pump to the Bottle
Insert the pump stem into the top of the bottle and press down firmly until it clicks into place and sits flush with the bottle neck. The pump should feel secure and not wobble.
Prime Before First Use
Hold the bottle upright and depress the pump 3 to 5 times until a fine mist appears. This purges any air from the stem. Your spray is now ready to use.
⚠️ Prime into a tissue — not toward yourself or others.
Replace the Cap and Refrigerate
After each use, replace the protective cap over the nozzle. Refrigeration is required. Store upright in your refrigerator away from strong odors. Do not freeze.
Recommended Usage
Use only as directed by your prescribing physician. Most protocols call for 1 to 2 sprays per nostril once daily. Do not exceed the recommended dose without consulting your provider.
If anything appears to be missing from your order, do not discard the packaging. Contact support@lavimd.com and we will make it right.
We hold ourselves to the standards set by the bodies advancing peptide science, so you can have full confidence in every product you receive.
American Peptide AssociationAmerican Peptide Association
The leading industry body advancing the science, safety, and standards of peptide research. Our membership reflects our commitment to purity, transparency, and responsible sourcing.
Official Member
SSRP InstituteSeeds Scientific Research and Performance Institute
A physician led institute advancing the clinical standards of peptide therapy and cellular medicine. Our membership reflects our commitment to evidence based, physician guided care.
Official Member
Declan V. –
Easy order, quick delivery, and the spray does what it says. Happy customer.
Yasmin K. –
I travel constantly for work and jet lag used to wreck me for three or four days on either end of a trip. DSIP has cut that down to about a day. It is now the first thing I pack.
Rowan P. –
I picked up the DSIP nasal spray because I was waking up at 3am every night. Within a week I was sleeping through. Ordering was simple too.
Odette B. –
I emailed about whether the spray needed refrigeration and got a real answer back from the team the same day, not a canned reply. Great support.
Estelle M. –
Dr. Sass reviewed my intake personally and asked real questions about my sleep patterns before approving anything. That kind of physician involvement is why I chose Lavi MD.
Marguerite A. –
No grogginess in the morning. That is the part that surprised me most.