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 has tumorgenicity.

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