Schisandra chinensis

Schisandra is the dried red berry of a woody vine, named for tasting sweet, sour, salty, bitter and pungent at once. Its key actives are lignans such as schisandrin and the gomisins, concentrated in the seed.

Schisandra lignans are thought to modulate the stress response — acting on the HPA axis, the stress-protective protein Hsp70 and nitric oxide — which underlies the adaptogenic, endurance-supporting effect. They are also strongly hepatoprotective and antioxidant, supporting liver enzymes and inducing phase-I/II detoxification pathways and glutathione, which is why schisandra is traditionally a liver tonic.

A detailed review of Russian research describes schisandra as an adaptogen that increases endurance, accuracy and mental performance in healthy people and in mild fatigue/asthenia, alongside changes in nitric oxide and cortisol.¹ Extensive laboratory and animal work plus small human studies support hepatoprotection (lower ALT, antioxidant and detox-enzyme effects), but large randomised trials are lacking.² Honest read: strongest as a traditional multi-purpose tonic; clinical proof is thinner than for ashwagandha or rhodiola.

About 500–2,000 mg/day of a standardised berry extract (or roughly 1–3 g of dried berry), often taken as a tonic course. It can be combined with other adaptogens in traditional formulas.

Usually well tolerated; occasional heartburn, appetite change or digestive upset. Schisandra induces liver CYP enzymes, so it can speed the clearance of some medications — an important interaction caution. Avoid in pregnancy (may stimulate the uterus) and with active peptic ulcer or reflux. Best for people wanting stress/endurance support or an antioxidant liver tonic.