Hydrocodone is mainly used to treat reduce chronic pain.Hydrocodone is used in combination formulations to treat nonproductive cough in adults and has antitussive properties. Hydrocodone is an antitussive and narcotic analgesic to treat moderate severe pain. Hydrocodone may cause side effects(stomach pain,dry mouth,tiredness,headache).Don’t be used this medicine without prescribed by doctors.Take it if you have the problems but try to buy it online.