Q: Concerned about Depakote Levels being High While on a Low Dose
Quick history: diagnosed BP II after ridiculous experiences with four
SSRI/SNRIs; otherwise in perfect health. Meds tried: Neurontin, Topamax, Lyrica,
xanax (all terrible, except xanax, but that was only mildly helpful).
I've been on 1000mg of Depakote for about a month. I had a lab test last week,
and- though my liver panel was fine- my Depakote levels were high. Because my
enzymes were okay, my Doctor said to stay on the meds, at the same dose, though
not to raise it as previously planned.
I'm a bit concerned, though. If my Depakote levels are high at such a low dose,
does that perhaps indicate that my body does not process Depakote properly? Or
that I run a higher than normal risk of developing long-term health problems
from continuing treatment with Depakote?
I've been doing well on the Depakote, I have to say. Though I've had some
trouble with a bit of depression as well mental clumsiness that hinders my
dissertation progress, I'll definitely take these over the agony I was in prior
to Depakote. My doctor wants to keep me on the 1000mg Depakote, and add in 900
mg of lithium. I'd rather just try lithium alone. (But my judgment might be a
bit clouded by the fact that I am disinclined toward combination therapy, and-
oh yea- scared of liver failure.) What would you do?
Dear Katie --
Thank you for a very well trimmed question. The fact that you are scared of
liver failure is a most unfortunate result of the way in which information about
medications is disseminated these days. The likelihood of such an event is
extremely low to start with and almost certainly lower now that you have been on
the medication with a normal liver function test. So that is the least of the
concerns at this point, in my view.
By far more concerning is the "mental clumsiness that hinders my
dissertation progress". Although this gives a sense of how bad things were, if
such a result is better than where you were living, it is still a major
problem. After you get used to life with your symptoms, this side effect will
surely bother you more and more. So it is just a matter of time until you will
end up wanting to address it in some way.
Your doctor probably recognizes other symptoms which have not been
fully addressed by this dose of Depakote, thus the idea of adding lithium. That
is a very common strategy, to try to make up the difference for what Depakote
alone cannot do, with a little bit of lithium. Not because of the blood level,
but because of the mental clumsiness, going up on the Depakote is not an option
-- presuming, of course, that the medication is the basis for this experience.
With Depakote, that is quite possible. Not common, but definitely possible,
particularly if you are at the top end of the dose range.
As far as I know, no one has ever established that the risks of
liver damage or pancreatitis are associated with high blood levels of Depakote.
These are idiosyncratic reactions that just happen, fortunately rarely. So the
blood level really does not matter in determining your dose at this point. Why
would we even get a level? Sometimes we use it to figure out what is going on,
when results are not in the typical pattern -- especially when we think the
medication ought to be working, and it is not.
Now, finally, to come around to your question: if your levels are
high, at a relatively low dose, what does that mean? Here, the answer is more
straightforward: it means that relative to the rest of the population, you are
probably at least somewhat a "slow metabolizer" . This is an official medical
jargon term referring to a specific pattern of liver enzymes, genetically
determined, found in a subset of the population, signifying nothing in terms of
the risk of continuing a medication like Depakote.
So, overall, you are in a position to celebrate. You have found a
medication that works so well, you are even willing to tolerate "mental
clumsiness", after a lot of swings and misses. I hope that with careful
adjustment, you will be able to find the right balance (perhaps Depakote and
lithium, perhaps others, such as lamotrigine) to bring you the "holy grail" of
bipolar medications -- 100% symptom control, and 0% side effects.
Good luck with the process --
Published November, 2008