Generally colds are self-limiting and do not require shots or fluids. If a cold develops comorbidities, the choice can be made on a patient-by-patient basis, with milder symptoms being treated with injections and more severe ones with fluids. The common cold does not require shots or fluids because viral infections have a natural course and even with shots and fluids, it takes some time to get better. Viruses are self-limiting and can be allowed to heal on their own. However, if a cold develops comorbidities, such as acute sinusitis, otitis media, or tracheo-bronchitis, the need for shots or fluids will depend on the severity of the illness. Fluids are given intravenously and injections are given intramuscularly. If antibiotics are to be administered, injections are appropriate for patients with mild symptoms and fluids are appropriate for patients with severe symptoms. If you have symptoms of a cold, drink plenty of water, eat fruits and vegetables, and exercise appropriately to strengthen your resistance.