VA-K-14 hydrochloride（VAK14 HCl） is a selective thyrotropin receptor (TSHR) antagonist (IC50= 12.3 μM) that inhibits TSHR stimulation by serum and monoclonal TSHR-stimulating antibodies from patients with GD and abrogates TSHR signaling.

The herbs of Ampelopsis japonica.

Sodium Monensin, isolated from Streptomyces cinnamonensis, is a well-known representative of naturally polyether ionophore antibiotics.