GLP & ISO Accredited Preclinical CRO

China Toxicity Study Of Plant Extract Manufacturers & Supplier

Pioneering mechanistic toxicology, LD50 profiling, genotoxicity batteries, and multi-endpoint safety assessments for botanical pharmaceutical, nutraceutical, and personal care active compounds.

Preclinical Research Portfolio

Standardized Safety & Phytochemical Core Services

Turnkey toxicological, in vitro, and chemical evaluation platforms accelerating novel botanical actives toward global regulatory approval.

OEM Animal Study Supplier

OEM Animal Study Supplier, Suppliers

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OEM In Vitro Test Research Service

OEM In Vitro Test / Research Service Manufacturers, Suppliers

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Screening of active ingredients of plants

China Screening of the active ingredient(s) of plants Manufacturer, Manufacturers

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Establishment of analysis methods

China Establishment of analysis methods of active ingredient(s) Supplier, Suppliers

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ODM Clinic Study Phase 1 - 4

ODM Clinic study (Phase 1 - Phase 4) Manufacturer, Suppliers

Clinical Study Phase 1-4
Potency evaluation of botanical active ingredients

ODM Study and evaluation of the potency of the botanical active ingredient(s) from different seasons and origins

Evaluate Potency
Botanical Safety & Toxicity Testing Services

Comprehensive Toxicity Studies (LD50, Acute, Chronic, Genotoxicity)

Toxicity Service Details
Natural Formulation Research

Botanical Active CDMO Formulation & Manufacturing Solutions

Formulation Research
Macro Industry Solutions

De-risking Botanical Complexity via Mechanistic Toxicology

Unlike pure chemical entities, plant extracts contain multi-component phytochemical matrices that necessitate holistic, target-organ toxicology and dynamic bio-analytical tracing.

Acute & Sub-Chronic Systemic Profiling

Determining absolute Median Lethal Dose (LD50), Maximum Tolerated Dose (MTD), and 28-day/90-day repeated dose oral toxicity in rodents and non-rodents under rigorous OECD 407/408 guidelines.

  • Organ-to-body weight indexation
  • Biochemical serum biomarker screening
  • Histopathological tissue lesion scoring

Genetic & Mutagenic Hazard Batteries

Full suite in vitro and in vivo genotoxicity testing designed to intercept DNA alterations, chromosome aberrations, and carcinogenic triggers prior to human exposure.

  • Bacterial Reverse Mutation (Ames Test, OECD 471)
  • In vitro Mammalian Chromosome Aberration (OECD 473)
  • In vivo Rodent Micronucleus Assay (OECD 474)

Target Organ & Secondary Metabolite Safety

Decoupling synergistic herb-drug interactions, CYP450 enzyme induction/inhibition, and hepatorenal clearance burdens triggered by volatile terpenes and polyphenols.

  • Primary hepatocyte sandwich-culture cytotoxicity
  • Glomerular filtration & nephrotoxicity assays
  • High-throughput metabolomic flux profiling
Industrial Intelligence

Global Landscape: Shifting from Empirical Trust to Verifiable Safety

Navigating the stringent global regulatory shifts in the European Union, United States, and Asia-Pacific markets.

The Cross-Border Compliance Bottleneck

Natural botanical medicines and functional ingredients face severe hurdles when entering Western markets. The European Food Safety Authority (EFSA) and the US FDA (NDI / GRAS frameworks) consistently reject herbal dossiers due to incomplete toxicological data sets, trace contaminants, and unstandardized active extracts. As China modernizes Traditional Chinese Medicine (TCM), the industrial demand for GLP-compliant contract research organizations (CROs) has surged dramatically.

MedGence (Yineng Pharma) bridges this structural gap. By uniting native Chinese herbal cultivation bases with modern analytical pharmacology, we generate verifiable safety dossiers that conform to ICH, OECD, and US-FDA standards, unlocking frictionless global commerce.

Trace Contaminant Risk Interception

A plant extract's intrinsic toxicity is frequently conflated with extrinsic toxic contaminants. A rigorous toxicity study must isolate endogenous secondary metabolites from processing artifacts, pesticide residues, and heavy metals.

  • Pyrrolizidine Alkaloids (PAs): Ultra-trace screening via LC-MS/MS below parts-per-billion thresholds to satisfy EMA limits.
  • Heavy Metal Speciation: Quantifying inorganic arsenic, cadmium, lead, and mercury bio-accumulation patterns.
  • Mycotoxins & Solvent Residues: Comprehensive quantification of aflatoxins B1/G1 and residual extraction solvents (Class 1 & 2).
Scale & Proven Data

Enterprise Preclinical Track Record & Infrastructure

14+ years of industrial validation serving leading multinational pharmaceutical enterprises and academic hospitals.

14+
Years of Natural Medicine CRO/CDMO Excellence
300+
Dedicated Toxicologists, Pharmacologists & Chemist Staff
100+
Top Pharmaceutical Groups & Hospital Networks Served
83
Classic TCM Formulas Fully Modernized & Characterized
22
Innovative Natural New Medicines Successfully Developed
56
Hospital Preparation Drug Registrations Approved
~400
Single-Herb Quality Standards & Process Monographs Formulated
100%
Confidential IP & Proprietary Formula Know-How Protection
Regulatory Assurance

Localized Support & Cross-Jurisdictional Dossier Compliance

End-to-end alignment with international regulatory authorities through our Changsha research hub and partner network.

US FDA NDI / GRAS Submissions

Structuring the safety dossier with definitive NOAEL (No Observed Adverse Effect Level) derivation, margin of safety (MoS) calculations, and genotoxicity validation for dietary ingredients.

EMA & EFSA Botanical Monograph Standards

Compiling traditional use justification backed by modern preclinical toxicology to support Well-Established Use (WEU) or Traditional Herbal Medicinal Product (THMP) filings in the EU.

China NMPA Drug & Health Food Registration

Executing required local safety assessments for Class 1 and Class 2 Innovative Traditional Chinese Medicines and Chinese Blue Hat health food approvals in direct compliance with NMPA decrees.

Application Scenarios

Translating Toxicology Across Specialized Target Sectors

From single active chemical isolation to complex botanical drug formulations, our toxicological findings serve distinct industrial endpoints.

Nutraceuticals & Functional Foods

Substantiating safe consumption levels for novel botanicals, high-potency polyphenols, adaptogenic mushroom fractions, and concentrated herbal teas to eliminate consumer safety liabilities.

Phytochemical Botanical IND Applications

Fulfilling rigorous preclinical safety documentation for Investigational New Drug (IND) submissions covering safe starting dose escalation, pharmacokinetics, and toxicokinetics.

Cosmeceuticals & Dermal Safety

Alternative non-animal toxicological validation, including OECD 439 reconstructed human epidermis (RhE) for skin irritation, OECD 432 3T3 NRU phototoxicity, and ocular tolerance assays.

Future Roadmap

Integrated Toxicological & CDMO Development Pathway

A unified, phase-gated execution plan from botanical raw-material screening to commercial-scale batch supply.

Phase 01

Screen & Chemical Fingerprint

Origin-specific potency evaluation, HPLC/HPTLC fingerprint development, and baseline phytochemical characterization.

Phase 02

In Vitro Bioactivity & Screens

Mechanistic cellular toxicity, pathway screening, and in vitro cytotoxicity benchmarks to identify high-efficacy candidate fractions.

Phase 03

In Vivo GLP Safety Profiling

Acute LD50, sub-chronic repeated dose studies, mutagenicity batteries, and toxicokinetic NOAEL determination.

Phase 04

Clinical Trials (Phase I–IV)

Small-group human trial verification for supplements or complete multi-phase clinical research for botanical drug registration.

Phase 05

Scalable CDMO Production

Direct translation to GMP pilot and commercial manufacturing: liquids, capsules, tablets, granules, and standardized powders.

Client Credibility

Trusted by 30+ Leading Pharmaceutical Giants & Hospitals

Providing authoritative toxicity testing, extract standard setting, and contract research for China's premier life-science organizations.

Beijing Tongrentang GroupBeijing Tongrentang Group
China Resources SanjiuChina Resources Sanjiu
Sunflower PharmaceuticalSunflower Pharmaceutical
Livzon PharmaceuticalLivzon Pharmaceutical
Dihon PharmaceuticalDihon Pharmaceutical
Golden Throat HoldingsGolden Throat Holdings
Yangtzi River PharmaceuticalYangtzi River Pharma
Beihai Gofar ChuanshanBeihai Gofar Biological
Humanwell HealthcareHumanwell Healthcare
SCIMYTH PharmaceuticalSCIMYTH Pharmaceutical
Shandong Hanfang PharmaceuticalShandong Hanfang
Luoxin PharmaceuticalLuoxin Pharmaceutical
Guangdong ZhongshengZhongsheng Pharma
Hunan Brilliance & AbundanceHunan Brilliance Herbal
Apeloa PharmaceuticalApeloa Pharmaceutical
Hunan Heng ChangHunan Heng Chang
Baotou Traditional Chinese MedicineBaotou TCM Co.
Kamp MedicineKamp Medicine Co.
Guangxi Santo PharmaceuticalGuangxi Santo Pharma
Hunan Kangshou PharmaceuticalHunan Kangshou
Jiangxi Juwang PharmaceuticalJiangxi Juwang Pharma
Beijing Tcmages PharmaceuticalBeijing Tcmages
Guizhou Ruihe PharmaceuticalGuizhou Ruihe Pharma
Anhui CR Jinchan PharmaceuticalAnhui CR Jinchan
Kangmei PharmaceuticalKangmei Pharma
Hunan Tianjicaotang PharmaceuticalTianjicaotang Pharma
Jiangxi Kingstone UniteJiangxi Kingstone
Shuguang Hospital Affiliated to Shanghai TCM UniversityShuguang Hospital
Hunan Province Directly Affiliated TCM HospitalHunan Affiliated TCM
First Hospital of Hunan TCM UniversityFirst Hospital Hunan TCM
Second Xiangya Hospital Central South UniversitySecond Xiangya Hospital
Second Hospital of Hunan TCM UniversitySecond Hospital Hunan TCM
Buyer Knowledge Base

Frequently Asked Questions on Botanical Toxicity Studies

Essential guidance for procurement directors, regulatory scientists, and product developers partnering with a Chinese preclinical CRO/CDMO.

Why is a specialized botanical toxicity study required instead of standard chemical testing?
Plant extracts represent complex mixtures where chemical synergies, trace phytotoxins, and extraction solvent matrices affect metabolic clearance. Standard chemical assays fail to predict synergistic hepatotoxicity or metabolic interactions. Our studies apply specific botanical characterization, including fingerprinting and marker quantification, ensuring the toxicity observed corresponds directly to reproducible botanical batches.
How do MedGence's toxicity studies support international US-FDA NDI and EU EFSA dossiers?
Our preclinical toxicity protocols strictly follow OECD Guidelines for the Testing of Chemicals and ICH safety standards. We provide fully documented GLP study reports including detailed histological microphotographs, statistical bioassays, NOAEL calculations, and validated analytical fingerprint records required by global regulatory agencies.
How is client intellectual property and formulation proprietary know-how protected?
MedGence works strictly under legally enforceable bi-lingual Non-Disclosure Agreements (NDAs). All proprietary extraction conditions, solvent compositions, pharmacological targets, and study data are firewalled. We operate purely on an entrusted research model; all IP and registration data generated belong 100% to the client.
Which analytical methodologies ensure batch consistency during preclinical safety testing?
We employ High-Performance Liquid Chromatography (HPLC), High-Performance Thin-Layer Chromatography (HPTLC), Gas Chromatography (GC-MS), and multi-wavelength UV chromatographic fingerprinting. This confirms that the test material evaluated during animal safety studies precisely matches future commercial-scale batches.
Can MedGence advance research directly from preclinical animal studies into commercial supply?
Yes. Our integrated CRO & CDMO architecture bridges the traditional void between laboratory testing and factory scaling. Our pilot facilities and partner manufacturing plants produce standardized active ingredients (liquids, powders, pastes, volatile oils) and finished dosage forms (capsules, tablets, softgels, oral liquids) under strict GMP management.
Integrated Supply Services

Botanical Active Ingredients & CDMO Service Offerings

Connect with our technical team to schedule safety assays, method establishment, or custom dosage manufacturing.

OEM Animal Study Supplier

OEM Animal Study Supplier, Suppliers

Request Animal Testing
OEM In Vitro Test Research Service

OEM In Vitro Test / Research Service Manufacturers, Suppliers

Order In Vitro Assay
Screening of active ingredients

China Screening of the active ingredient(s) of plants Manufacturer, Manufacturers

Start Plant Screening
Analysis methods of active ingredients

China Establishment of analysis methods of active ingredient(s) Supplier, Suppliers

Establish Method
ODM Clinic Study Phase 1 - 4

ODM Clinic study (Phase 1 - Phase 4) Manufacturer, Suppliers

Initiate Clinical Trials
Evaluation of botanical potency

ODM Study and evaluation of the potency of the botanical active ingredient(s) from different seasons and origins

Request Seasonal Study
Contract Manufacturing OEM for Botanical Active Ingredients

Contract Manufacturing (OEM) for Standardized Active Ingredients

OEM Extract Supply
Contract Manufacturing CDMO Finished Products

Contract Manufacturing (OEM/CDMO) for Finished Dosage Forms

Contact Formulation Team