Strangely I've heard marshmallows help. I also drink hot water with honey and lemon and find that helps.
Salt water gargle. It eases the soreness. Hot water with lemon seems to help with bacteria and just some throat relief
Marshmallows do help:) I am finally getting over my lovely cold after a week. I gargled salt water, and mouthwash sometimes helps. Teas and soups. My midwife told me I could do cough drops but I never did. Good luck hope you feel better