I had one scope done last September..... someone told me to mix the prep stuff in half the recommended liquid(I used crystal light) and it worked just fine.... I think it was a little under a quart that I used.... and you drink a little every 15 minutes...... another tip: start earlier in the day(2:00 or 3:00), don't wait until 6:00 or 7:00 at night because then you will be up all night.......!!!
hope this helps.....
