HI, thanks for using healthcare magic
The need to clear your throat because of mucus is usually to rhinosinusitis (inflammation of the nasal passages and sinuses
It more commonly occurs as a result of allergies or infection (viral infection such as the cold
If due to allergies then it would be important to avoid the source if it is known.
Other aspects of treatment are the use of a topical steroid nasal spray
and an antihistamine.
I hope this helps