From search of external encyclopedias:
Synthetic opioids (Category) [Opioids] ...
Narcotic (Chemistry) [Opioids] Chemical substance with psycho-active properties ...
Desocodeine (Chemistry) [Opioids] ...
Oripavines (Category) [Synthetic opioids] ...
Cogazocine (Chemistry) [Opioids] [Phenols] Chemical compound ...
Kappa agonists (Category) [Receptor agonists] [Opioids] ...
Ketorfanol (Chemistry) [Opioids] [Morphinans] [Ketones] Chemical compound ...
Semisynthetic opioids (Category) [Opioids] ...
Aslam Anis (Biography) [Opioids] Bangladeshi-Canadian health economist ...
Volazocine (Chemistry) [Opioids] Chemical compound ...
Isocodeine (Chemistry) [Opioids] ...
Kolokol-1 (Chemistry) [Opioids] Toxic chemical agent used by Russian special forces ...
Aknadinine (Chemistry) [Opioids] ...
Butinazocine (Chemistry) [Opioids] Chemical compound ...
Methadone clinic (Chemistry) [Opioids] Substance use disorder services clinic ...
Moxazocine (Chemistry) [Opioids] [Antitussives] Chemical compound ...
Bentley compounds (Chemistry) [Semisynthetic opioids] Class of chemical compounds ...
3-Acetyloxymorphone (Chemistry) [Opioids] [Acetate esters] ...
KGOP01 (Chemistry) [Guanidines] [Benzazepines] [Opioids] ...
Isomethadol (Chemistry) [Opioids] ...
Analgesic (Biology) [Agnosia] [Opioids] Any member of the group of drugs used to achieve analgesia, ...
DALDA (Chemistry) [Guanidines] [Opioids] ...
Proenkephalin (Biology) [Precursor proteins] [Neuropeptides] [Opioids] Protein-coding gene in the species Homo sapiens ...
Poppy tea (Biology) [Euphoriants] [Opioids] [Medicinal plants] Herbal tea made out of poppy straw or poppy seeds ...
Ethylketazocine (Chemistry) [Sigma agonists] [Opioids] Chemical compound ...
Opioidergic (Biology) [Opioids] [Neurotransmitters] [Neurochemistry] ...
Secofentanyl (Chemistry) [Opioids] [Designer drugs] Chemical compound ...
Pipramadol (Chemistry) [Carboxamides] [1-Piperidinyl compounds] [Opioids] ...
Dihydroisocodeine (Chemistry) [Opioids] The other isomers of codeine are allocodeine and pseudocodeine and they ...
Biphalin (Chemistry) [Dimers (chemistry)] [Opioids] [Peptides] Chemical compound ...