Cough, runny nose. Most respiratory infections involve either runny/stuffy nose, cough, or difficulty breathing. Minor upper respiratory tract infections last up to 7-10 days and are mild. Fever may be present at the beginning. Lower respiratory tract inections can be more severe. Wheezing, loose cough with mucus production, labored/rapid breathing may be present- these symptoms require evaluation by a doctor.
Varies. Symptoms and types of rx available will very by patient age/ intensity of symptoms and other health issues present. The more information you provide in your question, the more likely an answer can be crafted to meet your needs.