I wonder how you can tell how well any of your meds work/worked if you kept changing around every other week? Drugs do have a "half life" and your old pills would not work as well as a new prescription, etc.

I think you will have at least 2 problems, if not three:

(1) Your prescribing doctor needs to know what you have taken, when, and you'll have to convince him that changing is a good idea. Changing doctors will only go so far unless you are in a very large city and/or there are not good controls over who goes to whom. All my prescriptions are sent by internet to my pharmacy the instant my doctor and I discuss them in his office.

(2) Insurance will only pay for certain ones at certain times, etc. and if your pharmacy(ies) are not paying attention, the insurance people probably are. Even if you pay out of pocket, the "missing" and sporadic prescriptions are going to say as much to them as those they know about? Prescriptions are dated and both only good for a certain period and the date written/filled is noted? When you had what pills is known.

(3) The pharmacies are in there in cahoots to make sure they don't get into trouble too these days. Your record with #2 above may "follow" you even if you go to different doctors, etc. I would not do a whole lot of playing with your meds on your own as then you don't have at least 2 of 3 (doctor, health insurance, pharmacist) to back you if there's an actual problem of some sort, make any of them worried and they just make their part harder with more hoops to jump through or they refuse to play with you at all.

I discovered I had missing medicine last week, that I think was stolen. I called my doctor to get the new prescription and that worked out okay and when I got to my pharmacy, the pharmacist hadn't been told "why" a new prescription had been sent in and his first words were, "you just picked that up a couple weeks ago" and I explained about the stolen part and he was on board too but then we have the whole insurance thing which the pharmacist would "fix" but I said just let me pay for it out-of-pocket (fortunately it was only a $50 prescription and not my $400 one!) so my prescription history doesn't get flagged in any way by the insurance company. But that was for a non-controlled substance; as Rose says, the Ritalin and its ilk will get you in a mess if you aren't careful.