Did you eat as much salad before the medicine or did you start eating salad often when you began the med? Wondering if its the salad giving you trouble. I have IBS and certain varieties of lettuce cause terrible symptoms for me.
Yes, it could be the salad, if you eating a lot more than normal. If all you're eating is salad and little meat, it could also be a lack of fiber. You need a variety of veggies, whole grains and a little fruit to provide enough fiber. Drinking too much water, without enough food can also cause bloating.
You might try eating an apple, with the skin on, every day and see what happens. For me, an apple works just like taking a laxative.