Final answer:
Cole likely consumed a benzodiazepine, a type of drug that increases the activity of the inhibitory neurotransmitter GABA, leading to a calming effect.
Step-by-step explanation:
Drug That Increases GABA Activity
If Cole has ingested a drug that functions by increasing the activity of GABA (gamma-Aminobutyric acid), the most likely drug he consumed is a benzodiazepine. GABA is a major inhibitory neurotransmitter in the brain, and benzodiazepines enhance its effects, leading to a depressant outcome. These drugs are often prescribed to treat conditions such as anxiety and insomnia because of their ability to calm brain activity and induce relaxation.
Benzodiazepines, such as diazepam (Valium), alprazolam (Xanax), and lorazepam (Ativan), are known for their GABAergic activity which explains their properties as sedatives, anticonvulsants, and anxiolytics. As GABA agonists, benzodiazepines bind to GABA receptors and increase the inhibitory effects of GABA, which can reduce nervousness and promote sleep.