Ive been prescribed northisterone 3 tablets a day while on depo provera does this affect depo and when the tablets run out what will happen as it was to stop breakthrough bleeding?

This oral progesterone medication is used to potentiate the level (effect) of depot provera (slow released progesterone by injection) in order to stop the breakthrough bleeding which can be due a drop in progesterone level from the last injection. If medication is effective, bleeding will cease then you will be back to your baseline. No menses or irregular cycle is a side effect of depot provera.