: Yellow oleander seed poisoning (YOSP) has been reported as one of the means to commit suicide in
Batticaloa district. This study was an attempt to find relation between the YOSP and fruiting season of yellow
oleander. A total number of 1076 patients admitted due to YOSP during November 2011 to March 2016 (during
52 months). More than 80 % were females with the age range between 20 and 35 years. YOSP is higher during
the dry season where the rainfall was below 400 mm during the study period and the admission was higher in
May, every year. The study unable to establish a relationship between fruiting season of yellow oleander and the
YOSP, because yellow oleander produces fruits throughout the year, irrespective of the dry and rainy seasons.