Schisandra

Schisandra

Common Names

  • Wu wei zi
  • Schizandra
  • Five flavor berry
  • Fructus schisandra
  • Gomishi
  • Omicha
  • Omija
  • Ngu mie gee
  • Chinese magnolia vine fruit
  • Wurenchun

For Patients & Caregivers

Schisandra is a fruit extract used in traditional Chinese medicine, but few studies have been conducted in humans.

Schisandra has a long history of use in traditional Chinese medicine to treat liver conditions, stomach disorders, and as a tonic to improve vitality. It is also used in various formulas for fatigue and sleep. Its Chinese name, wu wei zi, means five-flavored fruit, to reflect the five flavors recognized in TCM: sour, bitter, sweet, salty, and pungent.

Scientists do not know how Schisandra works, but lab experiments have begun to identify some possible effects. Schisandra has antioxidant activity and appears to protect the liver and nervous system. Other animal studies suggest it may improve mental and physical functioning. Only a small number of studies have been conducted in humans and are too limited to draw any conclusions.

  • To treat lung problems and coughs
    Although schisandra is used to treat some lung symptoms in traditional Chinese medicine, clinical trials have not been conducted.
  • To treat gastrointestinal problems
    The traditional use of schisandra to treat diarrhea and indigestion is not yet supported in clinical trials. A small study in liver transplant patients suggests schisandra may help with the side effect of diarrhea associated with immune suppressant medication.
  • To treat liver disease
    Animal studies do show that schisandra can protect the liver from chemically-induced damage. In humans, one small study in liver transplant patients suggests schisandra can improve liver function. Another small study indicates it may be helpful in combination with other treatments for chronic hepatitis. However, these are uncontrolled trials that are inconclusive. Larger, more rigorous studies are needed to confirm these results.
  • To increase strength and stamina
    Human studies have not been conducted to evaluate this use.
  • To reduce sweating
    A small trial in women suggests that schisandra may help menopausal symptoms including hot flushes and sweating.

Schisandra may reduce the effectiveness of some drugs or increase their adverse effects. Patients should talk with their doctors about the possibility of such drug interactions.

  • You are taking drugs that are substrates of cytochrome P450 1A2, 3A4, or 3A5: In vitro and animal studies suggest schisandra can affect how these drugs are metabolized. Clinical relevance has yet to be determined.
  • You are taking drugs that are substrates of P-glycoprotein: Schisandra may increase the risk of side effects of these drugs.

No serious side effects have been reported, but schisandra is not well studied in humans.

Schisandra can reduce the levels of certain liver enzymes on lab tests.

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For Healthcare Professionals

Schisandra chinensis, Schisandra sphenanthera

Schisandra has a long history of use in traditional Chinese medicine to treat coughs (1), liver conditions (2), stomach disorders (3), sweating (4), as an adaptogen (5), and as a tonic to improve vitality. It is also used in various formulas for fatigue and sleep. Its Chinese name, wu wei zi, means five-flavored fruit, to reflect the five flavors recognized in TCM: sour, bitter, sweet, pungent, and salty.

In vitro studies suggest that schisandra has anti-inflammatory (1) (6), anticancer (7) (8), and cardioprotective effects (9). Animal studies also suggest cardio- and liver-protective effects (10) (11) (12). Schisandra appeared to enhance endurance and metabolism (13), improve cognitive functioning (14), and exhibit antimicrobial (15), antioxidant, neuroprotective (16), and anti-hyperglycemic activities (17) (18) (19) in other preclinical models. Active lignans isolated from schisandra, particularly schisandrin A, appeared to reverse P-glycoprotein (Pgp)-mediated multidrug resistance of various cancer cell lines to doxorubicin, vincristine, and paclitaxel (20).

Very few human trials have been performed with this supplement. Small clinical trials suggest improvements in patients with fatty liver disease or hepatitis C when used in combination with other substances (21) (22). In liver transplant patients, schisandra appeared to reduce tacrolimus-associated side-effects of diarrhea and agitation and improve liver function (24). In a small study of renal transplant patients who were CYP3A5 expressers, a schisandra preparation reduced tacrolimus dosing requirements, improved initial dose accuracy, and resulted in fewer dose changes (38). In small studies of women, schisandra did not induce significant changes in obesity-related measures (39), but was helpful for menopausal symptoms (40). A study of a proprietary formulation that included schisandra suggests improved performance of cognitive tasks (23).

Additional research is necessary to determine actual efficacy attributable to schisandra and to uncover possible interactions or side effects associated with this supplement.

  • Cough
  • Diarrhea
  • Indigestion
  • Liver disease
  • Strength and stamina
  • Sweating

Lignans in schisandra have been linked to various effects including hepatoprotective (10), antiproliferative, and estrogenic activities (27). In vitro, schisantherins downregulated pro-inflammatory cytokines and mediators by blocking NF-κB and MAPK signaling (1). The anthocyanin Cya-3-O-xylrut has been identified as responsible for its antioxidant activity (18).

In animal toxicity models, pretreatment with schisandra lignans provided liver-protective effects via increased DT-diaphorase activity (10), and improved Phase I drug metabolism  (28) (29). Schisandra also increased hepatic glutathione levels and glucose-6-phosphate and glutathione reductase activities (17). It lowered blood glucose levels via inhibition of α-glucosidase activity  (19), and improved post-ischemic cardiac function by downregulating inflammatory cytokines, activating the eNOS pathway, inhibiting apoptosis, and enhancing cell proliferation (12). In amyloid-beta-induced memory impairment, schisandra increased superoxide dismutase and glutathione peroxidase activities and glutathione levels in the cerebral cortex and hippocampus of mice while decreasing malondialdehyde and oxidized glutathione (14). It also enhanced endurance and metabolism in rat skeletal muscle by upregulating PGC-1α expression (13).

In human renal cell carcinoma cells, a schisandra polysaccharide identified as SCP induced apoptosis via caspase-3 and -9 activation, increased PARP cleavage, and inactivation of the ERK pathway (8). Another polysaccharide known as SCPP11 exhibited antitumor effects in hepatic cancer models via increased thymus index as well as serum IL-2 and TNF-alpha levels, and enhanced phagocytosis and NO production (26). Pgp-mediated chemotherapy drug-resistance in various cancer cell lines was reversed by schisandrins through the inhibition of Pgp and total protein kinase C function/expression (20).

Schisandra coadministration increased oral bioavailability of tacrolimus via inhibition of Pgp-mediated efflux and cytochrome P450 3A-mediated metabolism, and reduction of intestinal first-pass effect (30).

No serious side effects have been reported, although schisandra is not well studied in humans. A few minor adverse events, such as sleepiness and cold extremities, were observed in both treatment and placebo groups in one small trial (23).

  • Cytochrome P450 1A2, 3A4, and 3A5 substrates: In vitro studies suggest that lignans isolated from schisandra can inhibit CYP3A4 and CYP3A5 enzymes (41). Animal studies suggest schisandra inhibits CYP3A4 and CYP1A2 and can affect the intracellular concentration of drugs metabolized by these enzymes. Long-term use can also induce CYP3A4 activity (33) (34). Clinical relevance has yet to be determined.
  • P-glycoprotein substrates: Lab and human studies suggest schisandra can inhibit Pgp activity and may interfere with the metabolism of certain drugs (35) (36).
  • Tacrolimus: In liver transplant patients, schisandra increased blood levels of tacrolimus, an immunosuppressant (24).

Schisandra can reduce levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) but did not change total or direct bilirubin levels (21).


  1. Park HJ, Lee SJ, Song Y, et al. Schisandra chinensis prevents alcohol-induced fatty liver disease in rats. J Med Food. Jan 2014;17(1):103-110.

  2. Sun HD, Qiu SX, Lin LZ, et al. Nigranoic acid, a triterpenoid from Schisandra sphaerandra that inhibits HIV-1 reverse transcriptase. J Nat Prod. May 1996;59(5):525-527.

  3. Panossian A, Wikman G. Pharmacology of Schisandra chinensis Bail.: an overview of Russian research and uses in medicine. J Ethnopharmacol. Jul 23 2008;118(2):183-212.

  4. Lee YJ, Park SY, Kim SG, et al. Identification of a novel compound that inhibits iNOS and COX-2 expression in LPS-stimulated macrophages from Schisandra chinensis. Biochem Biophys Res Commun. Jan 22 2010;391(4):1687-1692.

  5. You JS, Pan TL, Hou YC. Schisandra chinensis protects against adriamycin-induced cardiotoxicity in rats. Chang Gung Med J. Jan-Feb 2006;29(1):63-70.

  6. Ip SP, Yiu HY, Ko KM. Schisandrin B protects against menadione-induced hepatotoxicity by enhancing DT-diaphorase activity. Mol Cell Biochem. May 2000;208(1-2):151-155.

  7. Stacchiotti A, Li Volti G, Lavazza A, et al. Schisandrin B stimulates a cytoprotective response in rat liver exposed to mercuric chloride. Food Chem Toxicol. Nov 2009;47(11):2834-2840.

  8. Lee SK, Kim SD, Kook M, et al. Therapeutic effects of alpha-iso-cubebenol, a natural compound isolated from the Schisandra chinensis fruit, against sepsis. Biochem Biophys Res Commun. Oct 26 2012;427(3):547-552.

  9. Xu X, Zhou X, Zhou XW, et al. Schizandrin prevents dexamethasone-induced cognitive deficits. Neurosci Bull. Oct 2012;28(5):532-540.

  10. Jo SH, Ha KS, Moon KS, et al. In Vitro and in Vivo Anti-Hyperglycemic Effects of Omija (Schizandra chinensis) Fruit. Int J Mol Sci. 2011;12(2):1359-1370.

  11. Chiu HF, Chen TY, Tzeng YT, et al. Improvement of liver function in humans using a mixture of schisandra fruit extract and sesamin. Phytother Res. Mar 2013;27(3):368-373.

  12. Melhem A, Stern M, Shibolet O, et al. Treatment of chronic hepatitis C virus infection via antioxidants: results of a phase I clinical trial. J Clin Gastroenterol. Sep 2005;39(8):737-742.

  13. Aslanyan G, Amroyan E, Gabrielyan E, et al. Double-blind, placebo-controlled, randomised study of single dose effects of ADAPT-232 on cognitive functions. Phytomedicine. Jun 2010;17(7):494-499.

  14. Jiang W, Wang X, Xu X, et al. Effect of Schisandra sphenanthera extract on the concentration of tacrolimus in the blood of liver transplant patients. Int J Clin Pharmacol Ther. Mar 2010;48(3):224-229.

  15. Liang Y, Zhou Y, Zhang J, et al. In vitro to in vivo evidence of the inhibitor characteristics of Schisandra lignans toward P-glycoprotein. Phytomedicine. Aug 15 2013;20(11):1030-1038.

  16. Huang KC. The Pharmacology of Chinese Herbs. Boca Raton, FL: CRC Press; 1999.

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