Sore throat and a question

I watched my BFF's 4 year old last week and she shared her cold with us. I woke up this morning with a sore throat, I have no honey and the only lemon I have is the juice in a bottle do you think that in Earl Grey tea would help?

AAAND Can my 3 year old take those halls vitamin C drops? I figured Vitamin C helps kick this kind of crap but beings as I did not get paid when I was supposed ot I wasn't able to pick up any orange juice or anything.