Hi...Recurrent Throat Infection has many causes...like being Allergic to different allergens, pollution, pollen grains, dust, strong smelling agents,....also Acidity...Reflux can be one imp reason...& and most imp of all is Low Immunity....the immune system is so weak that one is not able to cope with the increasing stress....causing one to fall I'll regularly.
In view of the above....you must take some medicines to help improve your Immunity....& Homoeopathy definitely will help you in this aspect...
Health Tips
Along with medicines...good containing Vit C like Chavanprash, Amla, etc can be consumed daily....
Also regular exercise & Pranayam...like Aanulom_ Vilom....will be useful.