Hello,
Drainage down the throat also known as
Post nasal drip can occur due to causes like Sinusitis, Upper
Respiratory tract infection, acid reflux, allergies etcetera.
I would suggest you consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like PNS View x-ray, nasal endoscopy, upper G.I Endoscopy etcetera can help in diagnosis and treatment can be planned accordingly.
In case of infection, you can be advised to take a course of antibiotics, anti-inflammatory painkiller, decongestants oral as well as a
nasal spray, antiallergic, and mucolytics.
As of now, you can take anti allergic like
Levocetirizine, Mucolytics like Ambroxol. If it is due to acid reflux antacids and
proton pump inhibitors like Omeprazole and diet modifications can be advised.
In case of allergies, take anti-allergic and preventing exposure to the allergen can be advised. Do warm saline gargles and steam inhalations. Limit exposure to dust, avoid chilled foods and sip on warm water.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Honey Arora