Please cite the main reference and the reference for the page that you are using.
oprm_human,
acm2_human,
acm1_human,
acm3_human,
ada2a_human,
ada2b_human,
ada2c_human,
oprd_human,
oprk_human,
ada1d_human,
5ht2a_human,
hrh1_human
Tapentadol,
Naltrexone,
Oxybutynin,
Clonidine,
Trazodone