Dictionary

A receptor is a protein molecule in a cell that receives signals from outside the cell and, in response, triggers changes within the cell. These changes can include activating or inhibiting certain processes or transmitting the signal further into the cell to produce a specific cellular response. Receptors play important roles in cellular communication, regulation of cellular processes, and the body’s responses to stimuli such as hormones, neurotransmitters, and environmental signals.

In the context of drug usage, a receptor refers to a specific protein molecule located on the surface or within cells to which drugs or other biologically active molecules can bind and produce a therapeutic effect. Drugs can act on receptors by mimicking or blocking the effects of naturally occurring molecules, such as hormones or neurotransmitters. By targeting specific receptors, drugs can produce desired therapeutic effects, such as reducing pain, lowering blood pressure, or treating mental health disorders. The specific receptors a drug targets can affect its efficacy, side effects, and potential for drug interactions.