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Table 1 Counts of molecules with various opioid mechanisms of action

From: Therapeutic indications and other use-case-driven updates in the drug ontology: anti-malarials, anti-hypertensives, opioid analgesics, and a large term request

Action

Type of receptor

 

mu

kappa

delta

Agonist

28

11

9

Antagonist

4

3

3