A valid prescription does not automatically prevent a DUI charge in Mississippi because the central issue is whether your driving was impaired at the time of the stop. Lawful use of medication is an important factor to document and can mitigate the state’s position, but it does not itself negate observed impairment. Prosecutors consider officer observations, field sobriety results, and any toxicology findings when deciding charges. It is important to promptly gather prescription records and medical documentation to show the medication regimen and timing relative to the stop. These materials help place laboratory results and observed behavior in context and may support defenses based on lawful use and lack of impairment. In many cases, demonstrating proper medical use and presenting corroborating records improves the ability to negotiate favorable outcomes or challenge evidence. An attorney can advise on whether additional medical review or toxicology interpretation is necessary to explain results. Timely action to collect pharmacy records and physician notes is essential, as delays can complicate efforts to obtain complete documentation and may reduce options for addressing charges effectively in Iuka and Tishomingo County courts.