The Pgp inhibition percentage of Furanodiene at 3 various concentrations (1/9 MTC, 1/3 MTC and MTC) was (21 ± 1.88)%, (34 ± 2.05)% and (58 ± 1.82)%, respectively (Table 3). Here, PGP is linked to medullary thyroid gland carcinoma.