Cellular components – no specific molecular target

The term Cellular components – no specific molecular target is a classification used in pharmacology to describe therapeutic agents that do not interact with a specific protein, such as a receptor, enzyme, or transporter, to exert their effects (ChEMBL Database). Instead, these drugs function through broad physicochemical processes, such as the chemical neutralization of stomach acid by antacids or the alteration of osmotic pressure by agents like mannitol (Goodman & Gilman's The Pharmacological Basis of Therapeutics). Other examples include surfactants that physically reduce surface tension in the lungs and adsorbents like activated charcoal that bind toxins in the gut through van der Waals forces (PubMed, PMID: 29939614). Because these agents lack a defined molecular lock-and-key interaction, they are often grouped under this heading in drug discovery databases to indicate the absence of a specific proteinaceous target. This category is essential for distinguishing between targeted molecular therapies and those that rely on general chemical or physical properties to treat conditions like dyspepsia, poisoning, or edema (StatPearls, NBK541072).

Other names

Non-specific targetPhysicochemical targetNon-proteinaceous targetGeneral cellular componentNon-molecular target

Drugs in this category act through physicochemical mechanisms such as chemical neutralization of gastric acid, creation of osmotic gradients to move water, adsorption of toxins, or physical reduction of surface tension (StatPearls, NBK541072; ChEMBL Target Classification).