And my two cents' worth: I didn't catch who prescribed that way for you, so can't logic it out, but the protocol most of us are on is a FIVE day pulse of flagyl, not seven.
Of course, two people recently seen at Vanderbilt are on longer pulses, by prescription, and I would trust the folks who originally devised the protocol. Even so, the flagyl is done as tolerated and if it's untenable, you have to know when to say when and take it for a shorter period of time.
I had almost no negative response to flagyl, beyond being more tired at first (that only lasted a few pulses) and being more cranky or testy (which I noticed in year two, but it's almost gone now, as well). I still wasn't willing to push the envelope and take it more than five days back then, as I knew I had to be at work no matter how I felt. The protocol was designed to make it as do-able as possible for the greatest number of people, allowing them to function. If your lack of function has too heavy a cost, you can to ratchet back just a bit. And, if you recover that quickly from a pulse, you might think about doing a three or four-day pulse every third week, instead of every fourth. Shorter, but more frequent.
Now, do I think flagyl pulses are worth it? Uh, yeah. Since it's what actually kills the cpn, yes, I think it's worth it. And, since you notice a great effect when taking it, it's obvious it's working.
The difference between what we do and what we are capable of doing would suffice to solve most of the world’s problems. Mohandas Gandhi