From history it seems that your other is suffering from Acute Gastro-enteritis
and requires urgent attention to prevent dehydration
and iv fluids.
Consult your doctor and get examined.
Continue with Norflox TZ
Give some tablet for vomiting
, after vomiting stops other medicine will remain in stomach and fluid intake will be maintained.
Give plenty of water, Electrolyte, ORS liquid, lemon juices.
Observe for signs of dehydration like passing less urine, feeling thirsty and dryness in mouth.
Ok and take care.