Hhmmm..that's a puzzler....yeah I'd want to know why too. See, I'd think it impossible to take 5 a day without having to get up after I've gone to bed to take one. My day starts anywhere from 2-5am (depending on when internal vibrations wake me, was 3:00 this morning) and even being up 15 hours that would be a pill every 3 hours, if taking max 5 a day. I took one at 3 then I'll do another at 10, depending on how back is after some major cleaning, if bad, I'll do at 9. Then the other will be at either 4 or 5 and that will be it because I'll be in bed by 7 or 8 and won't take another until I get up following morning. But yeah, it certainly seems like your doctor should have given you reason for change. Do you do urine test when you go? If so and you've taken them as you should, that level meds should show up in the test. If taking more than should, not saying YOU are, just using as example, it will also show a higher than normal level. Hope you get sufficient answers.