The Eden Institute Biblical Herbalism Education

Eden Apothecary · Herb Profile

Poria (Fu Ling, Hoelen, Tuckahoe, Indian Bread)

Poria cocos

Pronounced Poria: POR-ee-uh. Poria cocos: POR-ee-uh KOH-kos. Fu Ling: foo ling (roughly foo LING).

Neutral and quietly drying: a bland, sweet fungal sclerotium that leaches dampness out through the urine, firms and strengthens a boggy, deficient Spleen, and settles a phlegm-troubled, restless Heart.

At a glance

Botanical name
Poria cocos
Family
Polyporaceae (the polypore family; a wood-decay Basidiomycota fungus, not a flowering plant). The current accepted mycological name is Wolfiporia extensa / Wolfiporia cocos; Poria cocos is the pharmacopeial name retained here for the common name.
Part used
Dried sclerotium, the dense underground fungal storage body that grows on the roots of pine (Pinus spp.). Traditional grades: whole Fu Ling; the thin outer peel Fu Ling Pi (superficial edema); the reddish outer flesh Chi Fu Ling (drains damp-heat through the urine); the white inner flesh Bai Fu Ling (strengthens the Spleen); and Fu Shen, the portion enclosing the pine root, favored to calm the spirit.
Taste
Sweet and bland. The near-flavorless blandness, a distinct category in Chinese medicine, is what leaches and drains dampness downward through the urine; the faint sweetness is what gently supplements the Spleen and harmonizes the middle. Recorded in the junction as Sweet, the closest match in the six-taste vocabulary.
Temperature
Neutral. Classically balanced (ping), neither warming nor cooling, so Fu Ling can be added to hot and cold formulas alike.
Moisture
Dry (functionally). It is bland and gentle rather than harshly desiccating, but its net action is to remove excess water, so it belongs on the drying side.

Safety at a glance

In pregnancy

Generally regarded as low risk in normal therapeutic and culinary amounts. Fu Ling is a component of several classical formulas used during pregnancy, with no signal of teratogenicity in the traditional or animal literature. However, rigorous modern human safety studies are lacking and it is a functioning diuretic, so high or sustained diuretic dosing should be avoided in pregnancy and any use is best supervised. Modern safety references (AHPA Botanical Safety Handbook, which places Poria among the more benign botanicals; Bensky, Clavey and Stoger, Materia Medica, which lists no pregnancy contraindication) treat it as benign, while consumer monographs (NCCIH-style, RxList/WebMD) note that data are limited and advise caution. Reasonable position: safe in ordinary food-grade amounts, avoid high-dose diuretic use, use under professional guidance.

While breastfeeding

No specific concern is documented, and Fu Ling has a long record of use in nursing women in East Asian practice; Bensky, Clavey and Stoger list no lactation contraindication. Rigorous modern data are limited, so ordinary food-grade amounts under professional guidance are reasonable while high-dose diuretic use is avoided. (AHPA Botanical Safety Handbook; Bensky, Clavey and Stoger; NCCIH-style consumer guidance.)

For children

Gentle enough for supervised pediatric use, and Fu Ling appears in many traditional children's formulas for damp digestive complaints and unsettled sleep. Give low, weight-appropriate doses, preferably as a decoction or cooked into food (congee), and avoid high diuretic dosing in a small child. No specific pediatric toxicity is documented. (Bensky, Clavey and Stoger; AHPA Botanical Safety Handbook.)

Cautions

A remarkably benign, food-grade herb; adverse effects are uncommon and usually mild (occasional digestive upset or, rarely, an allergic reaction). Because it is a genuine diuretic, high or prolonged dosing can in theory contribute to fluid or electrolyte loss, so it should not be pushed in the dehydrated, the fluid-depleted, or those on strong pharmaceutical diuretics without oversight. A traditional Chinese pairing caution holds Fu Ling to be incompatible with vinegar (a food-combining, not a pharmacological, caution). Confirm identity: true Fu Ling is the pine-borne sclerotium.

General contraindications

No absolute contraindications for the general adult. Relative cautions: yin-deficient dryness and cold-deficiency states with excessive urination, spermatorrhea, or prolapse (TCM); significant dehydration or electrolyte depletion; and concurrent strong diuretic therapy (additive fluid loss). Rigorous human data in pregnancy and lactation are limited (see those fields).

Stewardship

Not at risk. Fu Ling is produced on a very large scale by cultivation on inoculated pine logs (chiefly in Yunnan, Hubei, Anhui, and Guizhou), so demand is met by farming rather than wild harvest, and the North American form is a common, non-threatened wood-decay fungus. Not listed by United Plant Savers (a registry of North American native plants). The main stewardship questions are the pine timber used as substrate and correct species identification, not wild depletion.

In the traditional record

Not in canonical biblical texts and unknown to the ancient Mediterranean world; native to East Asia and also to North America. Its documented tradition is Chinese, entering the materia medica in the Han-era Shen Nong Ben Cao Jing as Fu Ling, ranked among the superior longevity herbs, and it remains one of the most frequently used herbs in Chinese and Japanese (Kampo, as Bukuryo) medicine. The same fungus was eaten by Native Americans and colonists in the American South as tuckahoe or Indian bread.

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