Diovan and impotence

I am 53 year old male and began taking Diovan 160 dose in JULY 2002. I have dizziness, nausea, fatigue, some weight gain but changed diet and lost the extra 20 lbs. Of course, I realize the fatigue is due to the insomnia. I can be feeling OK and all of a sudden feel nausea, chills, sweats and have to lay down sometimes it last for days; other times just a few hours. I have a thumping in my throat with every heartbeat, which causes a headache. Am always complaining of lower back and joint pain. My eyesight is ever changing for the worst, has is my impotence. Open to natural ways to lower BP.

I have been taking Diovan for 3 months, and I developed bad coughing for more than 5 weeks. I stopped Diovan 5 days ago and I feel much better (no cough), but my head is about to blow and my ears are burning. The doctor is saying that diovan is the best for my age (33 yrs) as everything else could have much worse side effects, impotence in particular. Any suggestions? (I was taking Diovan 80 once a day).