D2 receptor x H1 receptor x μ opioid receptor x κ opioid receptor x σ1 receptor x δ opioid receptor x Muscle-type nAChRs x 5-HT2 receptor
Dopamine D2 receptor x Histamine H1 receptor x Mu opioid receptor x Kappa opioid receptor x Sigma opioid receptor x δ-opioid receptor x Muscle-type nicotinic acetylcholine receptor x Serotonin 2 (5-HT2) receptor