Key features: Supports healthy sleep Promotes calmness and relaxation Provides comprehensive neurotransmitter support Biphasic, time-release tablets Sleep Relief’s biphasic tablets release nutrients in two phases. Phase I is a quick-release stage, delivering its nutrients within about 30-45 minutes. This phase’s nutrients naturally promote relaxation and helps people gently fall asleep. Phase II is the sustained-release phase, delivering the rest of Sleep Relief’s nutrients over the next 4 hours. Nutrients in phase II naturally helps people stay asleep. No two people are exactly alike, and what is creating sleep issues in someone may not be a problem for someone else. That’s why Sleep Relief gently and naturally targets the entire sleep cycle to help people fall asleep, stay asleep and wake refreshed.