Schisandra: Uses, Benefits, Dosage & Safety

Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy

What is Schisandra?

Schisandra (Schisandra chinensis), known as the 'five-flavor berry' (wu wei zi), is a red berry used in traditional Chinese medicine for the liver, for coughs, for stress and for stamina. It is classed as an adaptogen — a substance meant to improve the body's resistance to stress — and its active compounds are lignans such as schisandrin. Most of its reputation rests on traditional use and laboratory work rather than large human trials.

What Schisandra is commonly used for

In supplements, Schisandra is taken for liver support, stress resistance, stamina and menopausal symptoms. It is marketed as a liver-protective adaptogen; the human trial evidence is sparse, and most of the support comes from tradition and laboratory studies.

How Schisandra works

Schisandra's lignans show antioxidant and liver-protective effects in laboratory and animal studies, and adaptogen research proposes that they help regulate the body's stress-response system. These mechanisms are plausible and well documented in the lab, but they have not been matched by a strong body of human trials, which is why cautious reviewers treat the clinical claims as preliminary.

What the evidence says

Here's an honest snapshot of what published research suggests about Schisandra — including where the evidence is limited.

• A randomised, double-blind, placebo-controlled trial found a Schisandra extract eased menopausal symptoms, especially hot flushes, sweating and palpitations. (PubMed)
• General background is summarised by reputable health references; cancer-center reviews conclude that the human studies are too few and too limited to draw firm conclusions, and the liver and adaptogen evidence is mostly preclinical. (MedlinePlus)

Typical dosage used in studies

Trials and traditional use employ a wide range, often around 1–3 g of berry or several hundred milligrams of standardized extract daily; preparations vary widely. This is general information from research, not a recommendation.

Side effects and safety

Schisandra is generally well tolerated; possible effects include heartburn, decreased appetite or stomach upset. The most important practical caution is a drug interaction rather than a direct toxicity.

Medication interactions and who should avoid Schisandra

Sources & further reading

The evidence summary above is drawn from these sources. For general, authoritative background you can also consult:

• PubMed-indexed study (PMID 27763802)
• MedlinePlus
• NIH Office of Dietary Supplements
• NIH National Center for Complementary and Integrative Health

Frequently asked questions

Does schisandra protect the liver?

It has liver-protective effects in laboratory and animal studies and a long traditional reputation, but solid human trial evidence is limited.

Does schisandra help with stress?

As an adaptogen it is used for stress and stamina, but the human evidence is sparse and reviewers consider it preliminary.

Does schisandra help menopause?

A small randomised trial suggested it eased menopausal symptoms like hot flushes and sweating, though larger studies are needed.

Does schisandra interact with medications?

Yes — this is its key caution. It can affect the CYP3A4 enzyme that metabolizes many drugs, so check with a pharmacist if you take prescription medication.

How much schisandra is used?

Often around 1–3 g of berry or several hundred milligrams of extract daily, but preparations vary widely. This is general information, not a recommendation.