Metixene hydrochloride hydrate has potential anticholinergic activity and inhibits the binding of quinine ring benzoate (QNB) to muscarine receptors, with IC50 and Ki values of 55 nM and 15 nM, respectively.

Tiotropium Bromide hydrate (BA-679 BR hydrate) is a potent anticholinergic and bronchodilator, serving as a muscarinic receptor antagonist, specifically targeting mAChR.

Cynandione A, an acetophenone derived from Cynanchum wilfordii, has anti-inflammatory activity and significantly reduces pro-inflammatory cytokine overexpression via macrophage α7 nAChR activation and subsequent IL-10 expression.