I take singulair at night and have noticed about a 10 point increase in my bp in the morning..i take a bp pill in the morning (lisinopril hctz 10mg) which keep smy bp in check all day. But strangely my bp goes up after I sleep at night. I am wondering if that is due to the Singulair Im taking. I have increased my jogging and reduced salt and that has brought it down a little..