Medications are prescribed based upon individual symptoms. You would need to see a Psychiatrist (not your regular MD) for an evaluation - they will ask you questions about your thoughts, feelings and behaviors.
Each answer tells us something about your specific brain activity. People who are shaky have norepinephrine issues, people who can't sleep have serotonin issues... and so on - so what you would take would be based on your exact set of symptoms.
You would probably be given an antianxiety medication (not a benzo like Klonopin, or an SSRI (although those would work)), and everyone has different experiences with side-effects. Some people have none - some people have one or two - it just depends on what you're on.
Triggers are anything that you associate with the initial event which now cause anxious thoughts, feelings or behaviors. After teaching you some relaxation techniques (like diaphramatic breathing), I'd have you list all the triggers you can think of. Opposite the triggers- we'd write down things that counteract your reaction. So, for example, say whenever you see a can of diet coke your heart starts pounding, your thoughts race, you become anxious and upset. I'd have you then practice the breathing technique to counteract the fear reaction - eventually your reaction will change toward cans of diet coke (it's neurochemical - you are changing the brains reaction). This is the trigger part.
For the relapse prevention work, I'd have you bring me a can of diet coke. We'd work with it until you can look at it, hold it, etc without having any reaction whatsoever. We'd write down what works on that sheet of paper and you'd keep that with you to use when you needed it.
Does that help?