hi alexandra ;
welcome to HealthcareMagic
is an antiallergic that blocks H1 receptors & has mast cell
stabilizing action.Its quite safe but like all drugs it shows adverse effects in few people .They are nausea;dry mouth
;fatigue;headache ;occassionally sleepiness.As your daughter has fever;toothache;vomiting
it could be possible that she has not taken her food properly so she is dizzy & down.If you feel you can stop Loratidine as for now;let her recover from fever .Once she starts eating properly & looks better then you can restart the medicine.