Arecoline hydrobromide (Arecoline HBr) is a muscarinic acetylcholine receptor agonist.

Arecaidine hydrobromide is the salt form of Arecaidine, a pyridine alkaloid with potent GABA uptake inhibitory properties that acts as a substrate for H+-coupled amino acid transporter protein 1 (PAT1, SLC36A1) to competitively inhibit the uptake of L-proline.

Guvacoline hydrochloride (Norarecoline hydrochloride) is a muscarinic agonist.

Guvacine ethyl ester (Arecoline) is an alkaloid found in betel nut that is used in the synthesis of GABA uptake inhibitors.

Arecaidine is an alkaloid naturally present in areca nuts that functions as a γ-aminobutyric acid (GABA) reuptake inhibitor, displaying structural similarity to other GABA uptake inhibitors and demonstrating sedative effects in murine models, as well as protective activity against lethality induced by GABAA receptor antagonists, thereby supporting its use in neuropharmacological and inhibitory neurotransmission research.

Guvacine is a natural alkaloid and selective GAT (GABA transporter) inhibitor, serving as a lead structure for GAT inhibitors with psychoactive properties.