Taxifolin (Dihydroquercetin) is a flavonoid in many plants such as Taxus chinensis, Siberian larch, Cedrus deodara and so on.

(-)-Centrolobol has antifibrotic activity, it can significantly inhibit the proliferation of HSC-T6 cells in a dose-dependent manner. Centrolobol exhibits strong cytotoxic activity against KB cell line.

(-)-Taxifolin is the less active enantiomer of Taxifolin, demonstrating vital anti-tyrosinase activity and notable inhibition against collagenase (IC50 = 193.3 μM). It is valued as an essential natural compound showing antifibrotic potential, while also acting as a capable free radical scavenger and possessing antioxidant capacity.

Methyl hexadecanoate is an acaricidal compound found in green walnut hulls with anti-inflammatory and antifibrotic properties, inhibiting phagocytic activity and immune response.

Armepavine (R-Armepavine) exerted both in vitro and in vivo antifibrotic effects in rats, with inhibition of NF-κB, JunD and C/EBP pathways. It improves experimental autoimmune crescentic glomerulonephritis.

4-aminobenzoic acid is an organic acid with UV-absorbing and antifibrotic properties. When exposed to light, 4-aminobenzoic acid absorbs UV light and releases excess energy through a photochemical reaction, which may cause DNA damage.4-aminobenzoic acid also increases oxygen uptake at the tissue level and may enhance monoamine oxidase (MAO) activity to promote serotonin degradation, which in excess may lead to fibrotic Changes.

Halofuginone specifically inhibits collagen type I gene expression and matrix metalloproteinase 2 (MMP-2) gene expression, which may result in the suppression of angiogenesis, tumor stromal cell development, and tumor cell growth. Halofuginone Hydrobromide is the hydrobromide salt of halofuginone, a semisynthetic quinazolinone alkaloid anticoccidial derived from the plant Dichroa febrifuga, with antifibrotic and potential antineoplastic activities. These effects appear to be due to halofuginone-mediated inhibition of the collagen type I and MMP-2 promoters. Collagen type I and MMP-2 play important roles in fibroproliferative diseases.

Amygdalin (Laetrile) has antifibrotic, antitumor, anti-inflammatory and analgesic effects, amygdalin joint HSYA could inhibit the degeneration of the endplate chondrocytes derived from intervertebral discs of rats induced by IL-1beta and better than the single use of Amygdalin or HSYA. Amygdalin induces apoptotic cell death in human DU145 and LNCaP prostate cancer cells by caspase-3 activation through down-regulation of Bcl-2 and up-regulation of Bax.

Manassantin B is a potent inhibitor of NF-κB activation by the suppression of transciptional activity of RelA/p65 subunit of NF-κB. It also possesses anti-EBV lytic replication activity. Manassantin B inhibits interleukin-6-induced signal transducer and activator of transcription 3 activation in Hep3B cells, it has potential as a potent anti-inflammatory drug for use in pathological processes such as sepsis or acute lung injury. Manassantin B exerts antifibrotic activity in HSC-T6 cells, in part, via inhibition of cell proliferation and decrease of collagen production.