Ask the doctor. After being diagnosed with high blood pressure several years ago, I started taking diltiazem and Atacand. The results were good, giving me an average blood pressure of 110/65. I recently developed gastroenteritis and aspiration pneumonia. While I was in the hospital, my blood pressure got so low I was told to stop taking these medications. I have been off them since, and my blood pressure has remained normal, averaging 105/65. How can this be? Will high blood pressure return? Harvard heart letter : from Harvard Medical School [Harv Heart Lett] Journal article