Welcome to Just answer !
I am sorry to learn about your condition and I empathize with you.
Well you see cipralex is an activating class of anti depressant which as a side effect can lead to insomnia and therefore like most other ssri anti depressants it is usually given in the morning. So if you have been taking this drug at night which is quite unconventional way to take it then please switch over to the morning time intake of the drug and this shall stop your sleep problem , in fact the morning time dose will make you feel more energetic , stress free, enthusiastic and alert which is what it is supposed to do.
No the benefits of this drug outweigh the few side effects it has and that is why it is one of the most widely used anti depressant world over.
So to summarize --
From tomorrow start taking the cipralex in the morning ,but since you have taken it tonight , so instead of starting at 10 mg tomorrow morning , take 5 mg tomorrow morning and from day after tomorrow you may start taking 10 mg in the morning.
You shall inform about the change in schedule of the drug intake to your doctor and cite reason of insomnia motivating this change which shall be accepted by your doctor.
I hope this helps to ease your mind and give a direction to move in.
Do not worry the sleep problem will be over in 5-7 days once you switch over to morning dose from tomorrow.
Wish you all the best.
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