When you use the Canesten tablet some of it runs out in morning should it?

The Canesten tablet is inserted into the vagina, so it is not supposed to run out. Depending on the product you have bought, it can either be a tablet that is inserted into the vagina and disintegrates, or a vaginal pessary that creates a barrier that prevents future infection. If you think that some of the product has leaked out, you can call a pharmacist or doctor to get advice.