It doesn't matter how old the script is...in fact, the longer you've kept the bottle around, the more judicious you appear in terms of use...I wouldn't show them that you have multiple scripts of the same med from different sources, but the reason they ask what meds your on, is so when they do the test, they can rule out meds your legitimately taking. Very, Very, Very unlikely you'll have to produce the actual script/bottle of meds you list. In fact, I haven't ever heard of anyone being asked to produce such information (I'm a nurse)...so list the meds your taking, in the unlikely case they ask to see some sort of proof the med was prescribed to you, take one and only one (the most recent) prescription bottle to show --relax, it's no big deal..You'd really only have to worry about a scheduled drug showing up in your urine that wasn't prescribed