Table 3

Metabolism of tolterodine by microsomes from cells overexpressing P450 isoenzymes

P450 IsoenzymeRate of Formation (pmol/pmol P450 × min)
5-HMN-Dealkylated Tolterodine
1A1NDND
1A2NDND
2C8NDND
2C9-ArgND0.25 ± 0.05
2C19ND1.51 ± 0.06
2D65.0 ± 0.35ND
3A4ND0.23 ± 0.03
  • Data are mean ± SD of two experiments. ND, not detectable.