OpiumHydromorphonePapaverMorphineAlkaloidsHeroin DependenceHydrocodoneTyrosine DecarboxylaseThebaineMorphine DerivativesPeronosporaBerberine AlkaloidsOxymorphoneBenzylisoquinolinesAnalgesics, OpioidNarcoticsNoscapineCodeineCoptisBenzophenanthridinesOxycodoneErgot AlkaloidsDopa DecarboxylaseMorphine DependencePlants, MedicinalMorphinansMiosisEschscholziaOpioid-Related DisordersIsoquinolinesIndole AlkaloidsThalictrumPyrrolizidine AlkaloidsVinca AlkaloidsBotrytisLatexNarcotic AntagonistsDelayed-Action PreparationsSubstance Abuse DetectionInfusions, IntralesionalReceptors, Opioid, muMethadoneCinchona AlkaloidsGas Chromatography-Mass SpectrometryDrug ToleranceButorphanolObstetric Surgical ProceduresNaltrexoneNalbuphineOxidoreductases, N-DemethylatingPlant ProteinsNaloxoneBuprenorphinePain MeasurementPainGenes, PlantDose-Response Relationship, DrugTramadolPentazocineFentanylGene Expression Regulation, PlantAmaryllidaceae AlkaloidsAnalgesiaInfusions, Subcutaneous