<unk> appears to be relatively safe in overdose. It has been administered at daily doses of up to 300mg without causing clinically significant adverse reactions in the literature. The most commonly reported adverse effect of<unk> overdose is somnolence. Upon<unk> overdose, drowsiness may be expected and the compound should be cleared within 12hours. No special treatment is needed for<unk> overdose.
Melatonin 
Etoperidone
Sertindole
Tropisetron
Zolpidem
Cilansetron
Chloracyzine
Alosetron