Michael asks you about why some drugs are over-the-counter and some are prescription. you explain that in order for a drug to be approved for over-the-counter use the drug must:

The prescription is a dose of drug prescibed a doctor.

Nothing will delay it, but drinking some lemon (squeeze 3) would cut it, making it last a few days, but its not good to do that. won't hurt you but the next month will be more cramps.. take some advils with you on the trip