Supplement · Sleep, stress & mood
Magnolia bark
Also known as: Honokiol, Magnolol
A traditional stress and sleep herb (honokiol/magnolol) with mostly early evidence.
- Evidence
- Silver· human data
- Sources cited
- 1
- Last reviewed
- 22 July 2026
Magnolia bark contains honokiol and magnolol, compounds studied for calming, anti-stress and sleep effects, often appearing in cortisol- and sleep-support blends.
Much of the mechanistic work is preclinical, with limited human trials: some in combination products for menopausal sleep and stress. It is a plausible but under-evidenced option; effects and product quality vary.