Ingredient Evidence Review
Honokiol / magnolol (Magnolia 80/20)
Magnolia officinalis bark extract
Last updated 2026-05-19 · 4 primary citations
Mechanism
Honokiol and magnolol act on the same brain target as anti-anxiety medications (the GABA system) — but at a gentle modulating level, not a blunt switch. The result is faster sleep onset and quieter mental chatter at bedtime without the next-morning fog or the tolerance that builds up with pharmaceutical sedatives.
Why we use it
Shift workers need to fall asleep at the wrong time of day, often with a still-busy mind. Magnolia is the closest plant-based analog to a mild sleep aid — without the cognitive carryover that would defeat the purpose by the next shift.
How we dose it
Hericea uses 250 mg per serving (per Post-Shift packet). The clinical trial range that anchors this dose is 200–500 mg/day.
250 mg of magnolia bark extract standardized to the two active compounds — honokiol (80%) and magnolol (20%) — in the ratio shown to support sleep onset.
Quality & sourcing
80% honokiol + 20% magnolol standardized.
Magnolia officinalis bark extract.
Cautions
- consult physicianConsult physician if on benzodiazepines or sedatives.
Primary literature
Alexeev M et al. (2012)
NeuropharmacologyMechanism
Magnolol and honokiol gently activate the brain's main calming receptor system (GABA-A).
The mechanism paper — explains why magnolia produces sedation without the side effects of pharmaceutical sleep aids.
PMID 22445602
Qu WM et al. (2012)
Br J PharmacolAnimal sleep model
Honokiol reduced sleep onset time and increased deep sleep in mice.
Anchors the sleep-onset benefit specifically (vs. anxiolytic only).
PMID 22537192
Chen CR et al. (2012)
NeuropharmacologyAnimal sleep model
Magnolol reduced sleep onset and increased both deep and REM sleep in mice.
Complements the honokiol finding — both active compounds independently improve sleep architecture.
PMID 22771461
Kalman DS et al. (2008)
Nutr JPilot RCT
Magnolia + phellodendron reduced stress in healthy women in a clinical pilot.
Human pilot adds clinical support to the preclinical sleep work.
PMID 18426577