And lots of water as well as fruit and veggies.
When I had a cold, orange juice worked wonders for me.
U can take some hot lemonade. Warm up some water n add som lemon n honey if u have anything, or any herbal tea like chamomile tea, also gargle some warm salt water, or if u have any mouth wash like Listerine gargle that n take a lot of vitamin c like orange juice....hope u feel better