Yes using Iodine in a gargle solution and gargling with the Iodine can help get rid of sore throats and help prevent sore throats from coming back.
Salt and water gargling can also help get rid of sore throats and even gargling with Apple Cider Vinegar can help with sore throats.
Sipping some warm tea with honey can also help to lubricate your throat and soothe your sore throat or even eating a tablespoon of honey to help keep your throat lubricated.