Hydrocodone 10-500 mg refers to the term for the ‘combination medication’ for patients diagnosed with moderate or severe pain. Hydrocodone is an opioid, and here, it is accompanied by 325 mg of acetaminophen that reduces body temperature in the case of fever, except for its analgesic effect. This medication exerts its effect by having hydrocodone bind itself to the opioid receptors in the brain in control of pain sensation. This is despite the fact that the drug is effective, however, it has side effects such as dependency on the medication, shortness of breath, and other dizziness and vomiting among other side effects. The opioids contained in its formulation are a reason why it has to be taken strictly at the Hydrocodone 10-325 mg as ordered by your doctor so as to minimize the risks resulting from its use and maximize its effectiveness. Usually, even regular observation is highly recommended.