Hi, thank you for posting your query on health care magic.
Allergy might be a reason because of which you are suffering from repeated cold and throat infections.
You might find relief by taking
Analgesic (like Ibuprofen), Antacid (like Rantac), Antihistamine (like
Cetrizine),Oral Decongestant (like containing
Phenylephrine),Nasal Decongestant (like containing
Oxymetazoline) ,Vitamin C lozenges and Saline
nasal spray.
Keep a note of which factors(like atmosphere,dust, certain foods) trigger your cold and throat complains.Try to avoid those trigger factors.
Do steam inhalation.Do warm Saline gargles.Avoid cold,spicy, oily and very sweet food.Avoid dust,smoke and other pollutants.Drink lots of fluids(Warm).Hot tea with ginger,lemon and honey might help.
If even after following the above measures, your complains are not improving ,then it would be advisable to consult an Otolaryngologist Doctor.
Hope this answers your question.Get well soon.