Brief Answer:
Yes and maybe yes.
Detailed Answer:
Hi,
There is no need to divide the dose of
Lexapro into two as it has a fairly long half life to allow for a once-a-day dosing. But it certainly can be done if you would like to try shifting just half the dose to the morning before deciding whether to shift the entire dose to morning or not. Try shifting half the dose to morning for a few days, and then if you are comfortable, you can take the entire dose in the morning. If you feel that dividing the dose into two reduces the
nausea, then you can continue on it. The bottom line is that you can do it if it suits you.
Regarding Paxil, I do not know what dose you were on, but if there is any exacerbation while on a SSRI that has been effective for long, then the usual strategy is to increase the dosage to provide extra cover. If the dose is already maximum, then we add a second medicine to augment the effects of the first one. Changing a drug which has helped you for so long is done only as the last resort. Although there has been some research to show that in some people the SSRI loses its efficacy over time, the exact mechanism is not known. So one cannot predict whether Paxil would work for you now or not. Moreover, Paxil and Lexapro are both SSRIs and so, have similar mechanisms of action but there also are some differences in receptor binding capacity. In my opinion, if you were much better on Paxil and did not have any significant side effects, then you should certainly give it a try again. Regarding other similar medicines,
Zoloft and
Prozac are possible alternatives to Paxil and Lexapro.
I hope that you have got your
thyroid hormone levels tested recently. If not, please get it done as a thyroid hormone abnormality can cause break-through episodes of
anxiety or
depression.
Best wishes.
Dr Preeti Parakh
MD Psychiatry
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