When purchasing hydrocodone 10-500 mg online, it is important to do your research and choose a reputable online pharmacy. Look for pharmacies that require a prescription from a licensed healthcare provider before dispensing the medication. This helps to ensure that you are getting the proper dosage and that the medication is safe for you to take. Additionally, be cautious of online pharmacies that offer hydrocodone without a prescription or at significantly lower prices than other pharmacies – these may be selling counterfeit or substandard medications.