Hi,
The reasons for the increased dosage are:
1- I gained 18 pounds.
2- I eat a lot of fast food.
3- I stopped exercising.
So I needed a stronger solution for the bigger problem. My blood pressure was 140/100 on the 120 mg (but in summer it was 120/80). Now on the 180 mg it's 130/85 and I know next week it will be lower than that. If you take Benicar then you are not changing a lot. I have used Cozaar and I got a lot of bad side effects then I have used
Atacand and I got the same side effects.
Atacand, Benicar, Cozaar and Diovan are all in the same drug class and they will give similar side effects. I hope that I'm wrong and someone else will correct me but this what happened to me with 2 drugs of this class.
Supplements are very helpful too but you will not feel the effect before few months. Read the other threads about the supplements and you will see what I'm talking about

.
Now let talk about the drug classes you have used so far:
1- Diuretics: Hydrochlorothiazide
2- Lisinopril: ACEI
3- Atenolol: Beta-Blockers
4- Diovan: ARB
And you got side effects with them all. Me too

so I the last options I had was to try CCBs. I started with Norvasc and it was not effective at all then I started Diltiazem and it was the only good drug for me.
If you are like me (got a lot of side effects from all the drug classes, except CCBs) then I think you should try CCBs Like Norvasc or Diltiazem. I'm really sad or you because I was very depressed when I didn't find any medication that I can live with without those bad side effects.
Good Luck,
Michael