STYRYLPYRIDINIUM CHLORIDE is effective in preventing the establishment of Anchylostoma spp., ascarids and Dirofilaria immitis (heartworm) infections in carnivires. Dogs with established heartworm infections should not be treated until they have been converted to a negative status. Administration to heartworm infected dogs may cause adverse reactions due to pulmonary occlusion. Drug was restricted to use in veterinary only. It's not longer used.

Reynosin is a sesquiterpene lactone isolated from roots of Saussrurea lappa, Tsoongiodendron odorum, Manglietiastrum sinicum, Ambrosia confertiflora and other plants. Reynosin showed inhibition of platelet aggregation induced by AA, by ADP, or by PAF, inhibition of nitric oxide production in lipopolysaccharide (LPS)-activated murine macrophages, dose-dependent inhibition on CINC-1 induction in LPS-stimulated NRK-52E cells. Reynosin demonstrated bactericidal activity agains clinical strains of Mycobacterium tuberculosis.