No human molecular target

The designation 'No human molecular target' is a placeholder used in pharmacological databases to identify drugs and compounds that do not have a defined human protein, nucleic acid, or other molecular structure as their primary site of action. This classification is applied to substances that work through non-specific physical or chemical means, such as antacids that neutralize gastric acid or osmotic laxatives that alter intestinal fluid dynamics (Goodman & Gilman's The Pharmacological Basis of Therapeutics). It also encompasses medications whose therapeutic targets are exclusively found in non-human organisms, including many antibiotics, antivirals, and antiparasitics that target pathogen-specific machinery rather than human host proteins (DrugBank). In databases such as ChEMBL, this label ensures that compounds with non-receptor-mediated mechanisms are correctly categorized rather than being erroneously assigned to human proteins (ChEMBL). Consequently, this term does not represent a biological entity but rather a functional category for agents that operate outside the traditional drug-receptor paradigm. This distinction is vital for biotech analysts and researchers to distinguish between host-modulating therapies and those that act through alternative, non-human, or non-specific pathways.

Other names

Non-human targetNon-molecular mechanismUnknown targetNon-protein target

Not applicable