Please cite the main reference and the reference for the page that you are using.
aa3r_human,
aa2ar_human,
aa2br_human,
aa1r_human,
oprm_human,
ada2a_human,
ada2b_human,
ada2c_human,
oprd_human,
oprk_human,
5ht2a_human,
oprx_human,
adrb2_human,
adrb1_human,
hrh1_human
Caffeine,
Tramadol,
(r,r)-tramadol,
Tapentadol,
Hydrocodone,
Naltrexone,
Cebranopadol,
Hydromorphone,
Buprenorphine,
Clonidine,
Psilocybine,
Propranolol,
Orphenadrine