welcome to hcm
thanks for the query
causes of green stool
may be due to diarrhea,malabsorption
, celiac disease
, ulcerative colitis
and crohn's disease and some medications like antibiotics and NSAIDS
so consult your doctor about all these possible causes.
for runny nose you can take anti-histaminics.
put nasovion nasal drop.one drop in each nostril
hope this information will be helpful to you