howtosupplement
Cognition/Digestion/Performance

Schisandra

Berry extract used as an adaptogen that may modestly support mental stamina, fatigue resistance, and liver enzyme balance in adults.

Schisandra

Schisandra

39
score
C
evidence
Caution
risk

Proven Benefits

01May reduce mental fatigue
02May improve elevated ALT/AST
03May reduce physical fatigue
04May improve attention under stress
05May improve reaction speed

Chemical Forms

Recommended
  • Standardized Schisandra chinensis fruit extract
  • Schisandra lignan extract
  • Dried schisandra berry
Avoid
  • Proprietary blends with undisclosed schisandrin/lignan content
  • Stem or leaf extracts (less clinically studied than fruit)
  • Raw powder with no standardization (potency varies widely)
Expert Note

Most human research and traditional use focus on the fruit, especially extracts standardized to schisandrins or total lignans. Standardization matters because raw powders and vague blends can vary substantially in active lignan content, making effects less predictable.

Protocol

Amount
500-1000 mg
Frequency
Once or twice daily
When
Morning or early afternoon with food; avoid close to bedtime if it feels stimulating.

Safety & Limits

Upper Safe Limit
No official UL; up to ~1500 mg/day standardized extract has been used short term, but data above this are limited.
Cycling
Safe for continuous use

Contraindications

Pregnancy or breastfeeding — insufficient safety data for supplemental use
Tacrolimus, cyclosporine, sirolimus, or similar drugs — can raise or alter drug levels via CYP3A/P-gp effects
Warfarin or other narrow-therapeutic-index medications — possible metabolism interaction; use only with clinician oversight
Frequent GERD, gastritis, or peptic ulcer — may worsen upper-GI symptoms

Synergies

Rhodiola

Often paired in adaptogen formulas; rhodiola may complement schisandra's fatigue and focus effects through partly different stress-response pathways.

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