Glabrous Greenbrier Rhizome Classic Formulas … Natural Herb Library

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Eliminates toxic heat and resolves damp-toxin - Tu Fu Ling is classically used for syphilitic lesions, damp-hot sores, carbuncles, genital itching, and chronic skin disorders in which heat and dampness linger together.
Promotes urination and drains damp turbidity - it is chosen when damp-heat causes cloudy urine, leukorrhea, painful dribbling, or lingering lower-burner congestion.
Unblocks the channels and relieves painful obstruction - traditional use extends to mercury-related toxicity patterns, gout-like painful joints, swollen limbs, and chronic damp obstruction affecting the sinews and bones.

Tu Fu Ling with Bi Xie and Yi Yi Ren - a common pairing approach for cloudy urine, damp-heat, leukorrhea, and gout-like painful obstruction.
Tu Fu Ling with Jin Yin Hua and Lian Qiao - used when toxic heat produces carbuncles, swollen sores, or damp-hot skin eruptions.
Tu Fu Ling with Ku Shen and Bai Xian Pi - a damp-toxic skin pairing for chronic itching, eczema, discharge, or lower-body heat.

Me & Qi describes Tu Fu Ling as sweet, bland, and neutral, entering the Liver and Stomach to detoxify, eliminate dampness, and benefit the joints.
Materia medica summaries tracing back to Ben Cao Gang Mu repeatedly emphasize sores, mercury-related toxicity, painful joints, and damp-heat in the lower body as signature indications.
SOURCE NOTE: this record follows the accepted Smilax glabra identity used elsewhere in the repo and keeps it separate from Ba Qia and other Smilax rhizomes.