Hi thanks for asking question. You might have sore throat secondary to viral infection or secondary to shake you drink. You might have sore throat if taken outside food that may lead to it. Meanwhile to treat it drink more water. Avoid spicy food for few days. Avoid alcohol drinking and avoid smoking. If associated nasal blockage present steam inhalation and decongestant like oxybutinine or antihistaminic drug like cetrizine will be useful. Salt water gargle done for 2 to 3 times a day for few days. Take amoxyclav antibiotic prophylactically if have fever and stinging sensation in throat. Wish you good health. I hope my suggestion will helpful to you.