In the post-pandemic landscape of health and wellness, natural respiratory support formulations have witnessed an unprecedented surge in global consumer demand. At the forefront of this green wave is Quercetin—a highly potent bioflavonoid naturally found in abundance in botanical sources like Sophora japonica. Recognized historically for its antioxidant prowess, contemporary clinical research has illuminated Quercetin's potential as a highly effective mucolytic, anti-inflammatory, and antihistaminic agent, specifically targeted at mitigating chronic cough, bronchial hypersensitivity, and respiratory distress.
As a leading global ODM (Original Design Manufacturer) and contract manufacturing exporter, Chengdu Chenlv Herb Co., Ltd. offers customized, high-purity Quercetin formulations designed to meet rigorous pharmaceutical and dietary supplement criteria. Through advanced extraction methodologies and strict quality assurances, we enable global brands to deliver evidence-backed respiratory products to mature markets in North America, Europe, and Asia-Pacific.
"Scientific consensus suggests that Quercetin's modulation of inflammatory cytokines (such as IL-4, IL-5, and IL-13) and its ability to stabilize mast cells represent a key therapeutic pathway for managing persistent coughs and hyper-reactive airway disease."
Cough is typically triggered by sensory nerve stimulation in the bronchial mucosa, often driven by underlying inflammatory pathways. Unlike chemical antitussives that suppress the cough reflex centrally in the brain, Quercetin acts peripherally by targeting the cellular roots of airway irritation:
Strategic B2B purchasing managers look beyond simple ingredient pricing. They seek reliability, technological innovation, and regulatory compliance.
China, particularly the Sichuan and Shaanxi provinces, has access to the world's largest cultivated fields of Sophora japonica (Pagoda Tree), yielding premium-grade flower buds rich in Rutin, the direct biological precursor to Quercetin.
Chenlv Herb utilizes state-of-the-art enzymatic and acid hydrolysis processes. By implementing continuous closed-loop extraction, we maximize raw material utilization, translating directly into highly competitive B2B prices.
Aligning with today's focus on ESG (Environmental, Social, and Governance), our facility recycles over 85% of solvents used in production. We minimize waste while maintaining a production base capable of supplying hundreds of metric tons annually.
With modern warehousing and proximity to major shipping hubs, we shorten delivery times from weeks to days, keeping your supplement supply chain fully stocked and ready to meet seasonal demand spikes.
Equipped with HPLC, GC-MS, and ICP-MS testing units, we verify the absolute absence of heavy metals, pesticides, and microbial contaminants, fulfilling requirements of both the US FDA and European Pharmacopoeia.
Whether you require ultra-fine mesh micronized powders for instant drink mixes, water-soluble options, or granules for tablet pressing, our engineers deliver optimized physical forms for your specific machinery.
We support global buyers with a seamless step-by-step ODM/OEM formulation service. From custom lab samples to global freight delivery.
Defining formulation requirements, physical parameters, and target therapeutic claims.
Providing custom raw material costs, MOQ assessments, and production timelines.
Finalizing regulatory specifications, active ingredient percentages, and commercial terms.
Creating trial batches inside our laboratory to test solubility, flavor, and stability profiles.
Scaling up within our 9,514㎡ GMP-compliant facility using highly automated machinery.
Issuing formal COAs (Certificate of Analysis) documenting purity, heavy metals, and microbes.
Packaging in climate-controlled environments and exporting to your domestic warehouse.
Modern consumers demand convenient, pleasant, and effective options. Our ODM services allow you to incorporate Quercetin into various delivery systems:
High-potency capsules or tablets combining Quercetin with synergists like Bromelain (which enhances Quercetin absorption in the intestine) and Zinc to target seasonal respiratory immune defense.
Water-soluble Quercetin complexes designed specifically for non-drowsy cough syrups, soothing irritated throats and thinning thick bronchial mucus naturally.
Easily dissolving powders and effervescent tablets with pleasant citrus or berry flavor masking, appealing to younger, pill-fatigued demographics.
Allergy relief and lung function support formulations for cats and dogs, leveraging Quercetin's antihistamine properties to replace corticosteroid dependencies.
Our high-tech manufacturing plants conform to international food and pharmaceutical standards. This allows our products to clear custom checkpoints easily.
We are actively engaged in connecting with industry peers and showing the potential of Chinese botanical extraction innovation on international stages.
Evaluating raw material cost fluctuations in southern China and preparing optimized storage solutions for continuous global supply.
Meet our leading extraction experts in Shanghai to discuss the latest advancements in Quercetin purity, stability, and absorption enhancements.
Our sales and chemical teams showcased high-purity natural APIs in Guangzhou, establishing new global supply channels.
Detailed answers addressing safety, bioavailability, quality standards, and contract manufacturing logistics.
Our high-purity Quercetin is extracted from the dried flower buds of Sophora japonica (L. Leguminosae), commonly known as the Japanese Pagoda Tree. This natural botanical source is cultivated extensively in the mountainous regions of central and western China. It provides one of the highest concentrations of naturally occurring Rutin, which we then hydrolyze into bio-active Quercetin.
Quercetin acts as a natural antihistamine and anti-inflammatory agent. It stabilizes mast cell membranes, preventing them from releasing histamines, which trigger airway constriction and mucus overproduction. Furthermore, it inhibits the activity of lipoxygenase (LOX) and cyclooxygenase (COX) pathways, reducing the synthesis of inflammatory mediators that irritate airway nerve endings and trigger the cough reflex.
Standard Quercetin has low water solubility and is rapidly metabolized by the body. To enhance absorption, our R&D team offers custom ODM solutions. These include micronized Quercetin powders (particle size <10 μm) to increase surface area, liposomal encapsulation, and co-formulations with Bromelain. Bromelain acts synergistically to increase the permeability of intestinal walls, allowing more Quercetin to reach the bloodstream.
Every batch of Quercetin is tested for active ingredient assay (typically ≥95% or ≥98% by HPLC), loss on drying, ash content, particle size, and solvent residues. Additionally, we run comprehensive heavy metal screening (Lead, Arsenic, Cadmium, Mercury via ICP-MS), pesticide residue testing (conforming to EP regulations), and microbial testing (Total Plate Count, Yeast & Mold, E. Coli, Salmonella).
Yes, our contract manufacturing (ODM/OEM) division handles custom packaging. We supply bulk powder in 25kg drums, and can also package the product into retail-ready forms: capsules filled in HDPE bottles, tablets in blister packs, or single-serve effervescent sachets. We support private labels from concept creation, testing, formulation, through to final regulatory documentation.
Our production base is ISO 9001 and ISO 22000 certified, with cleanrooms built to GMP standards. We are registered with the US FDA and our products are certified Kosher and Halal, making them suitable for diverse global consumer groups.
Chenlv Herb
