Some online pharmacies offer discounts for buying Hydrocodone 10-500 mg in bulk. Hydrocodone works by binding to specific receptors in the brain and spinal cord called opioid receptors. These receptors are part of the body’s pain and reward system. When hydrocodone binds to these receptors, it reduces the perception of pain and can also create a sense of euphoria, which is why opioids like hydrocodone can be addictive. Make sure the online pharmacy you are using is legitimate and licensed.