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ID Subject of Study Study Name Name Type Overall Effect Enzymes Transporters Object Object Metabolite Precipitant
NPDI--fog0A Kratom (Mitragyna speciosa) Clinical Assessment of the Drug Interaction Potential of the Psychotropic Natural Product Kratom kratom tea - dextromethorphan interaction clinical NPDI study In Vivo Interaction negative — No Effect (based on bioequivalence limits)
  • CYP2D6
dextromethorphan water extract of kratom
NPDI-Oq9KmA Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Inhibition of Speciogynine for CYP2D6 In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan speciogynine
NPDI-o6FZsw Kratom (Mitragyna speciosa) Refined Prediction of Pharmacokinetic Kratom-Drug Interactions: Time-Dependent Inhibition Considerations Screening of kratom extracts as inhibitors of CYP2D6 activity in HLM In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan methanolic extract of kratom
NPDI-cimaKA Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Weak Inhibition of 7-hydroxymitragynine for CYP2D6 In Vitro Enzyme Inhibition negative — In Vitro Enzyme Negligible Inhibition
  • CYP2D6
dextromethorphan dextrorphan 7-hydroxymitragynine
NPDI-qWS53g Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Inhibition of Corynantheidine for CYP2D6 In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan corynantheidine
NPDI-K9DvIg Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Inhibition of Paynantheine for CYP2D6 In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan paynantheine
NPDI-ULP_qQ Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Weak Inhibition of Speciociliatine for CYP2D6 In Vitro Enzyme Inhibition negative — In Vitro Enzyme Negligible Inhibition
  • CYP2D6
dextromethorphan dextrorphan speciociliatine
NPDI-17YRkg Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Inhibition of Mitragynine for CYP2D6 In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan mitragynine
NPDI-4AITQg Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids Control Positive Inhibition for CYP2D6 In Vitro Enzyme Inhibition (Control experiment) positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan quinidine
NPDI-mJF8xw licochalcone a Inhibition of CYP enzymes by licochalcone a Inhibition of CYP2D6 by Licochalcone A In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan licochalcone a
NPDI-XFPmtA Kratom (Mitragyna speciosa) Refined Prediction of Pharmacokinetic Kratom-Drug Interactions: Time-Dependent Inhibition Considerations IC50 shift determination for mitragynine towards CYP2D6 activity in HLM with NADPH In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan mitragynine
NPDI-IdieOw Goldenseal (Hydrastis canadensis) An in vitro Evaluation of Cytochrome P450 Inhibition and P-Glycoprotein Interaction with Goldenseal, Ginkgo biloba, Grape Seed, Milk Thistle, and Ginseng Extracts and Their Constituents 2D6 Inhibition by Aq GS Extract In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan aqueous goldenseal extract
NPDI-PqZKVg Goldenseal (Hydrastis canadensis) An in vitro Evaluation of Cytochrome P450 Inhibition and P-Glycoprotein Interaction with Goldenseal, Ginkgo biloba, Grape Seed, Milk Thistle, and Ginseng Extracts and Their Constituents 2D6 Inhibition by Ethanolic GS Extract In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan ethanolic goldenseal extract
NPDI-cRrAsg Goldenseal (Hydrastis canadensis) An in vitro Evaluation of Cytochrome P450 Inhibition and P-Glycoprotein Interaction with Goldenseal, Ginkgo biloba, Grape Seed, Milk Thistle, and Ginseng Extracts and Their Constituents 2D6 Inhibition by Berberine In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan berberine
NPDI-6gn9Dg Goldenseal (Hydrastis canadensis) An in vitro Evaluation of Cytochrome P450 Inhibition and P-Glycoprotein Interaction with Goldenseal, Ginkgo biloba, Grape Seed, Milk Thistle, and Ginseng Extracts and Their Constituents 2D6 Inhibition by Hydrastine In Vitro Enzyme Inhibition negative — In Vitro Enzyme Negligible Inhibition
  • CYP2D6
dextromethorphan dextrorphan hydrastine
NPDI-KQoVKg Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6. HLMs: THC-dextromethorphan In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan delta-9-tetrahydrocannabinol
NPDI-Hsp-vg Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6. Recombinant: THC-dextramethorphan In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan delta-9-tetrahydrocannabinol
NPDI-THQe_g Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6. Recombinant: CBD-dextromethorphan In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan cannabidiol
NPDI-ckGWRw Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6. pHLM: CBD-dextromethorphan In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan cannabidiol
NPDI-8px6rQ Goldenseal (Hydrastis canadensis) Repeated administration of berberine inhibits cytochromes P450 in humans CYP2D6 Experiment In Vivo Interaction positive — PK Interaction - Increased systemic exposure
  • CYP2D6
dextromethorphan berberine
NPDI-p2jqFw Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6. pHLM: CBN-dextromethorphan In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan cannabinol
NPDI-0g58zw Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6. Recombinant: CBN-dextromethorphan In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan cannabinol
NPDI-cY8J6A Green tea (Camellia sinensis) Green tea (Camellia sinensis) extract does not alter cytochrome P450 3A4 or 2D6 activity in healthy volunteers. CYP2D6 inhibition experiment In Vivo Interaction negative — No Effect (based on bioequivalence limits)
  • CYP2D6
dextromethorphan green tea leaf extract
NPDI-kN7saQ Green tea (Camellia sinensis) Effects of green tea catechins on cytochrome P450 2B6, 2C8, 2C19, 2D6 and 3A activities in human liver and intestinal microsomes Inhibition of CYP2D6 by (-)-Epigallocatechin Gallate in HLM (Ki Determination) In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan (-)-epigallocatechin gallate
NPDI-P8wXLQ Green tea (Camellia sinensis) Effects of green tea catechins on cytochrome P450 2B6, 2C8, 2C19, 2D6 and 3A activities in human liver and intestinal microsomes Inhibition of CYP2D6 by (-)-Epigallocatechin Gallate in HLM (IC50 Determination) In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan (-)-epigallocatechin gallate
NPDI--jKvig Kratom (Mitragyna speciosa) Refined Prediction of Pharmacokinetic Kratom-Drug Interactions: Time-Dependent Inhibition Considerations IC50 shift determination for mitragynine towards CYP2D6 activity in HLM without NADPH In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan mitragynine
NPDI-1PLoEQ Licorice (Glycyrrhiza inflata) Cytochrome P450 inhibition by licorice species Glycyrrhiza inflata and fourteen licorice constituents Inhibition of CYP2D6 by G. inflata Licorice extract In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan ethanolic extract of licorice g. inflata
NPDI-ksOM2w Kratom (Mitragyna speciosa) Refined Prediction of Pharmacokinetic Kratom-Drug Interactions: Time-Dependent Inhibition Considerations Inhibition kinetics of CYP2D6 activity by mitragynine in HLM In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan mitragynine
NPDI-sfeVpQ Kratom (Mitragyna speciosa) Refined Prediction of Pharmacokinetic Kratom-Drug Interactions: Time-Dependent Inhibition Considerations Screening of mitragynine as inhibitors of CYP2D6 activity in HLM In Vitro Enzyme Inhibition positive — In Vitro Enzyme Inhibition
  • CYP2D6
dextromethorphan dextrorphan mitragynine
NPDI-FBHH1Q Green tea (Camellia sinensis) Effects of repeated green tea catechin administration on human cytochrome P450 activity. In Vivo Interaction negative — No Effect (based on bioequivalence limits)
  • CYP2D6
dextromethorphan green tea leaf
NPDI-kstb8w Licorice (Glycyrrhiza uralensis) Cytochrome P450 inhibition by licorice species Glycyrrhiza uralensis and fourteen licorice constituents Negligible Inhibition of CYP2D6 by G. uralensis Licorice extract In Vitro Enzyme Inhibition negative — In Vitro Enzyme Negligible Inhibition
  • CYP2D6
dextromethorphan dextrorphan ethanolic extract of licorice g. uralensis
NPDI-d_tXmg Licorice (Glycyrrhiza glabra) Cytochrome P450 inhibition by licorice species Glycyrrhiza glabra L. and fourteen licorice constituents Negligible inhibition of CYP2D6 by G. glabra Licorice extract In Vitro Enzyme Inhibition negative — In Vitro Enzyme Negligible Inhibition
  • CYP2D6
dextromethorphan dextrorphan ethanolic extract of licorice g. glabra
ID Subject of Study Name
NPDI-osTXuQ Kratom (Mitragyna speciosa) Clinical Assessment of the Drug Interaction Potential of the Psychotropic Natural Product Kratom
NPDI-eReNjw Kratom (Mitragyna speciosa) Exploration of cytochrome P450 inhibition mediated drug-drug interaction potential of kratom alkaloids
NPDI-d8OUzg Kratom (Mitragyna speciosa) Refined Prediction of Pharmacokinetic Kratom-Drug Interactions: Time-Dependent Inhibition Considerations
NPDI-oEAKVw licochalcone a Inhibition of CYP enzymes by licochalcone a
NPDI-EiXGKA Goldenseal (Hydrastis canadensis) An in vitro Evaluation of Cytochrome P450 Inhibition and P-Glycoprotein Interaction with Goldenseal, Ginkgo biloba, Grape Seed, Milk Thistle, and Ginseng Extracts and Their Constituents
NPDI-ieYYdA Cannabis (Cannabis sativa) Cannabidiol, a major phytocannabinoid, as a potent atypical inhibitor for CYP2D6.
NPDI-5XFThQ Goldenseal (Hydrastis canadensis) Repeated administration of berberine inhibits cytochromes P450 in humans
NPDI-yvZDKA Green tea (Camellia sinensis) Green tea (Camellia sinensis) extract does not alter cytochrome P450 3A4 or 2D6 activity in healthy volunteers.
NPDI-aujB5A Green tea (Camellia sinensis) Effects of green tea catechins on cytochrome P450 2B6, 2C8, 2C19, 2D6 and 3A activities in human liver and intestinal microsomes
NPDI-UmIRAQ Licorice (Glycyrrhiza inflata) Cytochrome P450 inhibition by licorice species Glycyrrhiza inflata and fourteen licorice constituents
NPDI-6yhsoA Green tea (Camellia sinensis) Effects of repeated green tea catechin administration on human cytochrome P450 activity.
NPDI-Lm3PvA Licorice (Glycyrrhiza uralensis) Cytochrome P450 inhibition by licorice species Glycyrrhiza uralensis and fourteen licorice constituents
NPDI-8SkM4A Licorice (Glycyrrhiza glabra) Cytochrome P450 inhibition by licorice species Glycyrrhiza glabra L. and fourteen licorice constituents

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