Linzess is a medicine people usually take every day if they have ongoing constipation problems, like with IBS-C. It works by pulling more water into your gut and helping things move along, but it's not really meant to be used "once in a while." If you only take it when you travel, it might not work the way you want - sometimes it won't help at all, and other times it could kick in with sudden diarrhea, which isn't fun if you're on the road.

If constipation only happens to you when you travel, there are easier and safer fixes. Things like drinking plenty of water, moving around, eating some fiber, or even using over-the-counter stuff like Miralax, Colace, or a gentle laxative (senna, bisacodyl) usually work better for short trips.

So no, Linzess isn't really a "travel-only" medicine. If this bothers you a lot, it's worth asking your doctor what's best for your specific situation.