The time taken for a chest infection to get better depends on several factors, such as the medication used, personal care, severity of the condition, the cause and a person's response to medication. Some conditions, such as acute bronchitis, will need no medical attention to get better, as stated by WebMD.
Typically, following the doctor's instructions while using medication is important in ensuring that the condition gets better quickly. Changing lifestyle by avoiding smoking and having a good hygiene is also necessary, as stated by NHS. Many chest infections are usually caused by viruses so it is advised not to use antibiotics to treat such conditions.