women who are pregnant must not take entresto. it can cause harm or death to an unborn baby. don't take entresto with an ace inhibitor or aliskiren. if you've had angioedema while taking an ace or arb medicine, don't take entresto. the most serious side effects are angioedema, low blood pressure... ...kidney problems, or high potassium in your blood. ♪ tomorrow, tomorrow i love ya, tomorrow ♪ ask your heart doctor about entresto. and help make tomorrow possible. ♪ you're only a day away. you'dreamt about it, it, maybe you should just go ahead and do it. we're legalzoom, and we've helped over a million people just like you start their own businesses. legalzoom. legal help is here.