my husband is 77 and can no longer reach an organism. we never had this problem before. He is taking , lisinipril, niaspan simvastiatin,fish oil, and asa. He has a stent in the coronay art. but has had no problem, passed his stress test with flying colors. His family doctor does not seem to give us any hope of fixing this problem.....he says it is problemly his medications, all the literature I have found on his drugs to not indicate this.....can you give us some suggestions...he also take viagra which works very well, just no organism. He is not over weight at 6ft 2 inches and 205 lbs, thank you,