Effects if Entresto

I'm taking Entresto which is really helping my heart heal. One of the side effects is a dry, itchy throat. I cough through out the whole day and night. It's a reflexive cough that I can't stop until it passes on its own. This cough is not only annoying but its also exhausting, it makes my head feel terrible and makes me dizzy if its a particularly bad coughing fit. It's a dry cough, no congestion. Has anyone else had this and can you give me any ideas for relief. Hot tea and honey doesn't work. I sleep all night with cough drops and I'm quite tired of those. I've tried elevating but I can't sleep that way. Please tell me any remedies you've got.