This agent contains aspirin so don't take it if you're allergic to aspirin, if you take aspirin for another reason, or if you have kidney insufficiency, gout or a history of ulcers. If you take any medications on a regular basis check with your doctor before using it.
Some people feel better within hours after the first dose.
Get a prescription for one of these medications from your doctor, fill it at home and carry the medication, in its original container, in your carry-on bag. Bring along a copy of the prescription in case a customs agent gets curious. After the diarrhea stops, you can stop the antibiotic. Typically only a few days of antibiotic is necessary. There is no need in this circumstance to take it for a set period of time or to finish all the medication.