Thanks from query,
I think your ciplar La 40 is working properly.
I advise you to just change your timings of consuming tablet.
As it is a long acting tablet it has its peak level after 4-8 hours of its consumption.Then it's blood level decreases.So if you take it at night the peak blood level achieved early in morning giving better effect.
In a due course when we arouse from sleep we feel fresh & during night time we have no tension so our blood pressure has no anxiety
So instead of taking it at night you changed it to take after your break fast at around 8.00 a.m.so its peak level achieved at about 2.00 p.m. at which time your blood pressure is some hat higher side due to work load.
Just measure it after 2 hours of taking tablet & different time of day for at least 15 days.
If you are not getting result consult your doctor to add more drug.