Side effects are rare and may include dizziness and gastrointestinal disturbances such as nausea or vomiting. Adverse effects such as constipation, drowsiness, excitation, ataxia and respiratory depression have been reported occasionally or after large doses. The primary safety concerns with<unk>  revolve around death during general anaesthesia.
Pholcodine
Dextropropoxyphene
Chlormethine
Acetryptine
Maralixibat chloride
Acetomepregenol
Tiotixene
Methenmadinone acetate