Sleep Well.

Because every shift deserves a better start.

NTI 2026 5-Night Trial Offer for $5

NTI 2026

$5 for 5-Nights

Defined Sleep is clinically proven to extend restorative sleep, especially for those with variable sleep schedules. Rested, engergized, and focused – great sleep makes it all possible. 


Use discount code NTI2026 during checkout.

NTI 2026 Special
$5 for 5 Nights
NTI 2026 5-Night Trial Offer for $5
Sleep Well
Because every shift deserves a better start.

Defined Sleep is clinically proven to extend restorative sleep, especially for those with variable sleep schedules. Rested, engergized, and focused – great sleep makes it all possible.


Use discount code NTI2026 during checkout.

NTI 2026 Special

$5 for 5 Nights

Promotional offers cannot be combined. Free or discounted trial purchases are ineligible for the money-back guarantee. Offer valid while supplies last.

Why Defined Sleep

Up to 2× More Deep and REM Sleep, Clinically Proven

Proven Efficacy
Defined Sleep was shown to increase deep & REM sleep (restorative sleep) in a landmark human clinical trial.
Non-Sedating
Defined Sleep does not make you drowsy. It works by increasing deep & REM sleep. It contains no sedatives that ‘knock you out’.
Safe to Take Every Night
Defined Sleep is non-intoxicating, has no fall risk, and is non-addictive/not habit forming.


Optimal for Shift Workers
Study participants who slept during the day (e.g. shift-workers), were highly responsive to the treatment with Defined Sleep.
No Side-Effects
Defined Sleep displayed an excellent safety profile in our clinical trial, had no effect on heart rate or heart rate variability, and no adverse events were observed by study participants.
Drug-Test Safe
Our plant-based formula contains no THC or other ingredients screened for in workplace drug tests.



DOCTOR RECOMMENDED

Nick Nissen, MD

“Insomnia is a common symptom associated with many psychiatric conditions, including anxiety. I recommend Defined Sleep to my psychiatry patients because it is a safe and effective alternative to stronger sleep medicines.”


Nick Nissen, MD
Board-certified Psychiatrist
American Board of Psychiatry and Neurology Sleep Medicine



© Defined Research, Inc.