How does Schisandra work in the body?

Schisandra contains active lignans, such as schisandrin and gomisin A, which function as adaptogens. These compounds are believed to regulate the hypothalamic-pituitary-adrenal (HPA) axis, helping the body resist stress. Additionally, Schisandra lignans induce liver detoxification enzymes and provide antioxidant protection to hepatocytes, supporting liver health. This mechanism supports its traditional use for enhancing endurance and mental clarity (Evidence Level C/Traditional).

Does Schisandra interact with prescription medications?

Yes, Schisandra has significant potential for drug interactions. It affects the cytochrome P450 enzyme system (specifically CYP3A4 and CYP2C19), which metabolizes many pharmaceuticals. This interaction can alter the breakdown of drugs, potentially increasing side effects or reducing efficacy. Patients taking anticoagulants, immunosuppressants, or drugs metabolized by the liver should consult a physician before use to avoid adverse interactions.

What is the recommended daily dosage for Schisandra?

For general health support, the typical adult dosage is 500 to 2000mg of dried Schisandra berries daily. For standardized extracts, a dosage of 250 to 500mg daily is common. It is often taken to support liver function or improve physical endurance. Because Schisandra can increase stomach acid, it is best taken with food to minimize gastrointestinal discomfort (Evidence Level C).

Is Schisandra safe to take during pregnancy?

No, Schisandra is considered unsafe during pregnancy. It is a uterine stimulant and may cause uterine contractions, increasing the risk of miscarriage or premature labor. Consequently, pregnant women should strictly avoid Schisandra supplements. Breastfeeding women should also avoid it due to a lack of safety data. This herb is contraindicated for individuals with epilepsy or high intracranial pressure as well.

What are the common side effects of taking Schisandra?

While generally safe for healthy adults, Schisandra can cause side effects in some individuals. Common complaints include gastrointestinal upset, heartburn, and decreased appetite. Because it stimulates gastric acid secretion, it is contraindicated for people with GERD or peptic ulcers. Other potential side effects include skin rash and allergic reactions. Discontinue use if you experience itching, swelling, or difficulty breathing.

Schisandra (Schisandra chinensis)

What is a herb–drug interaction?

A herb–drug interaction happens when a plant or supplement changes how a medication works in your body — making it stronger, weaker, or more likely to cause harm. Herbs contain active compounds that can speed up or slow down the enzymes and transporters your body uses to process drugs.

Why it matters

St. John's Wort can make birth control, antidepressants, and blood thinners less effective.

Garlic can increase bleeding risk with warfarin and other blood thinners (also ginkgo, ginger, and turmeric).

Kava can amplify sedation when taken with anxiety or sleep medications (also valerian).

The risk is highest for older adults, anyone taking several medications, and people with chronic conditions.

Always tell your doctor and pharmacist about every herb and supplement you take — and check below before combining.

Known Drug Interactions (2)

2 Moderate

Drug	Severity	Description
Warfarin (Coumadin)	Moderate	Schisandra may affect warfarin metabolism and anticoagulant effectiveness.
Tacrolimus	Moderate	Schisandra may increase tacrolimus blood levels through enzyme inhibition.

This list reflects a curated subset of documented interactions and is not exhaustive. The absence of a drug here is not proof that it is safe to combine. Always confirm with a pharmacist or healthcare provider.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Schisandra chinensis is a traditional Chinese medicinal herb recognized as a plant adaptogen used to enhance the body's resistance to stress and stability against physical loads [PMID:34445021, PMID:38398618].

Background

Schisandra chinensis (also known as Wu Wei Zi or Bei-Wuweizi) is a member of the Magnoliaceae family [PMID:39454375, PMID:18849034]. It is used as both a medicine and a food ingredient in China, Korea, Russia, and Japan [PMID:35359848, PMID:34678416, PMID:29352909].

Traditional uses

Traditionally used to treat coughs, insomnia, dreaminess, palpitation, spermatorrhea, and disorders of the liver and kidney [PMID:34678416, PMID:37001770]. It is also used to tonify Qi, nourish the kidney, calm the heart, and produce fluid to relieve mental stress [PMID:37001770, PMID:38336330].

Active compounds

The primary bioactive compounds are dibenzocyclooctadiene lignans (such as schisandrin, schisandrin B, schisantherin A, schisantherin B, schisanhenol, deoxyschisandrin, and gomisin A) [PMID:36771299, PMID:31431019]. Other active components include polysaccharides (composed of glucose, mannose, rhamnose, galactose, galacturonic acid, and arabinose), flavonoids, phenolic acids, anthocyanins, triterpenes, and norsesquiterpenoids [PMID:38788881, PMID:37560060, PMID:35347956].

Mechanism of action

Mechanisms include the reduction of CYP2E1-dependent oxidative stress [PMID:29902864], activation of the cGAS-STING pathway to inhibit HBV replication [PMID:37001770], and regulation of hepatic ceramide homeostasis via ASAH1 [PMID:41207267]. It also acts by fortifying mitochondrial antioxidant status [PMID:16552829], suppressing neuroinflammation through TRPV1 expression in microglia [PMID:39454375], and activating the pregnane X receptor (PXR) to induce drug-metabolizing enzymes [PMID:16267138].

Clinical evidence

Evidence ALiver Injury

Bioactive compounds significantly reduced alanine aminotransferase (ALT) levels and exhibit hepatoprotective, antioxidant, and anti-inflammatory effects [PMID:40832608].

Evidence DMetabolic Steatohepatitis (MASH)

Lignan extracts (SLE) and polysaccharides (SCP) effectively reversed steatosis and reduced serum transaminase levels and pro-inflammatory cytokines in mouse models [PMID:41207267].

Evidence DParkinson's Disease

Lignan-enriched extracts (LSC) addressed neuroinflammation and behavioral changes in MPTP-treated mice [PMID:39454375].

Evidence DColitis-induced Depression

Vinegar-processed Schisandra Chinensis (VSC) enhanced therapeutic effects on depressive behavior in chronic UC mice [PMID:39357281].

Evidence DDiabetic Skin Wound Healing

The active component Gomisin A demonstrated effectiveness in treating diabetic skin wounds in obese mice models [PMID:39303965].

Evidence D

Drug interactions

Schisandra lignans may induce metabolic drug-drug interactions (DDIs) by inhibiting cytochrome P450 and P-glycoprotein activities [PMID:35359848]. It has been shown to activate the pregnane X receptor (PXR), increasing the clearance of warfarin in rats [PMID:16267138].

Evidence summary

The evidence is primarily based on preclinical animal models (D) and literature reviews (C), with one systematic review and meta-analysis (A) supporting its hepatoprotective effects.

PubMed sources

1.PMID: 34445021 (2021) — Plant Adaptogens-History and Future Perspectives. · Nutrients
2.PMID: 38398618 (2024) — Anti-Neuroinflammatory Effects of Adaptogens: A Mini-Review. · Molecules (Basel, Switzerland)
3.PMID: 39357281 (2024) — Vinegar-processed Schisandra Chinensis enhanced therapeutic effects on colitis-induced depression through tryptophan metabolism. · Phytomedicine : international journal of phytotherapy and phytopharmacology
4.PMID: 29902864 (2018) — Protective effect of acidic polysaccharide from Schisandra chinensis on acute ethanol-induced liver injury through reducing CYP2E1-dependent oxidative stress. · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
5.PMID: 39885030 (2025)

Schisandra

Sources & Citations

Reishi

Ginseng

Eleuthero

⚠️ Not Recommended During Pregnancy or Nursing

2 Known Drug Interactions — Some May Be Serious

Contraindications

Possible Side Effects

What is a herb–drug interaction?

Known Drug Interactions (2)

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Drug interactions

Evidence summary

PubMed sources

Government sources

Schisandra

Sources & Citations

Related Herbs

Reishi

Ginseng

Eleuthero

⚠️ Not Recommended During Pregnancy or Nursing

2 Known Drug Interactions — Some May Be Serious

Contraindications

Possible Side Effects

What is a herb–drug interaction?

Known Drug Interactions (2)

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Clinical evidence

Drug interactions

Evidence summary

PubMed sources

Government sources