I Suffer From Heart Failure And Have Been Prescribed Several

I suffer from heart failure and have been prescribed several different diuretic tablets all of which I have had very bad side effects I have now been given indapamie 2.50 which seem to be better for me but my blood pressure is still in the region 0f 160/70 sometimes higher sometimes lower and I still get that horrible light headisness in the mornings which lasts for 3 to 4 hours will this stop as I keep taking the indapamide or do I have to live withit