<s>[INST] I have terrible allergies and I'm almost sure that my son also have allergies as he's got black rings around his eyes. Struggles with a runny nose and tonight he is a little bit out of breath. I experience the same if I do not take Allergex (yellow tablet) My son is 9 years old. Can I give him Allergex? [/INST] Hi,Welcome to health care magic,Runny nose could be due to rhinitis (allergic or infective),sinusitis,common cold or may be URTI.In children,runny nose is mostly due to viral infection because of their low immunity and may be because this viral infection he  might also have fever.You must take her to family physician to get properly diagnosed first as there is runny nose and black eyes since last 3 days and don't keep giving her just Allergex although it is a very good antiallergic drug on your own.It just subsides symptoms of runny nose.So,better to consult doctor. </s>