I developed a racing heart and high blood pressure instantly one morning. For about an hour I practiced deep breathing and drank water. Didn't help. I didn't want to go to the hospital for all the fears one can image (it is nicknamed ‘kill ‘em and hide ‘em) so grabbed my essential oils book, which recommended Ylang-Ylang.
Two whiffs and all went back to normal instantly never to return again.
That was in 2016! Ylang-Ylang travels with me always.