Chinese Raspberry Fruit

Chinese
覆盆子
Pinyin
Fu Pen Zi
Latin
Fructus Rubi

TCM Properties

Taste
sweet, sour
Temperature
slightly warm
Channels
Liver, Kidney, Bladder

Traditional Use

Primary Actions

  • Secures essence and reduces urination - Fu Pen Zi is a core herb for enuresis, urinary frequency, nocturia, and leakage patterns from weak Kidney qi.
  • Tonifies the Kidney and supports reproductive vitality - it is used for infertility, impotence, low sperm quality, and premature ejaculation when deficiency and leakage coexist.
  • Benefits the Liver and brightens the eyes - traditional use extends to blurred or dim vision from Liver-Kidney insufficiency.
  • Supports long-course constitutional restoration - because it both tonifies and astringes, it is valuable when the treatment goal is to nourish while preventing further loss.

Secondary Actions

  • Fu Pen Zi is gentler than purely restraining herbs such as Jin Ying Zi because it both nourishes and secures rather than only binding leakage.
  • Its famous name story refers to 'overturning the chamber pot,' a traditional way of saying it can reduce chronic urinary frequency.

Classic Formulas

  • Wu Zi Yan Zong Wan - classic fertility and Kidney-essence formula in which Fu Pen Zi helps secure the essence while other seeds deepen nourishment.
  • Kidney leakage formulas pair Fu Pen Zi with Tu Si Zi, Sang Piao Xiao, or Qian Shi for enuresis, spermatorrhea, and nocturia.
  • Vision-support formulas combine Fu Pen Zi with Gou Qi Zi and other Liver-Kidney tonics when chronic deficiency affects the eyes.

Classical References

  • Me and Qi presents Fu Pen Zi as a sweet-sour, slightly warm fruit that enters the Liver, Kidney, and Bladder to tonify and astringe at the same time.
  • Classical literature links its essence-preserving and eye-brightening functions to the shared root of Liver blood and Kidney essence.

Modern Research

Active Compounds

  • Polysaccharides - major modern research fractions in Rubus chingii fruit
  • Flavonoids and anthocyanin-related pigments - antioxidant constituents studied in fruit extracts
  • Triterpenoids and diterpenes - broader phytochemical classes reported in Rubus chingii reviews
  • Ellagic acid and related phenolics - compounds contributing to antioxidant and anti-inflammatory interest

Studied Effects

  • A 2025 review summarized preparation methods, structural characterization, and health benefits of polysaccharides from Rubus chingii Hu, reflecting current research emphasis on Fu Pen Zi's macromolecular fractions (PMID 40417219).
  • A 2017 study used active-tracking extraction to isolate antioxidant and antiproliferative ingredients from Rubus chingii fruits, illustrating the fruit's functional-food research profile (PMID 30108878).
  • A 2023 study described a novel polysaccharide from unripe Rubus chingii fruit and reported amelioration of colonic inflammation and oxidative stress in experimental work (PMID 37094397).

PubMed References

Safety & Interactions

Contraindications

  • Difficult or painful urination due to damp-heat rather than deficiency leakage
  • Yin deficiency with pronounced heat signs
  • Excess conditions without true Kidney deficiency

Cautions

  • Because Fu Pen Zi is astringent, it can trap pathogens or damp-heat if used when leakage is not rooted in deficiency.
  • Rubus substitutions are common in commerce, so quality sourcing matters.
  • MSK page not found - drug interaction data not available from Memorial Sloan Kettering integrative medicine database

Conditions