Wedge pillow?

Hello folks,

I have been diagnosed with GERD, although I do not have any symptoms of GERD per se. I have constant dry coughing for 5 weeks now and the ENT guy did take a look at Laryngo-esophageal sphincter and it is swollen which is causing the cough.

I am on Pentoprazole. The doc also suggested using a wedge pillow under the head to raise the body so that the acid doesn't reach the point aggravating the situation.

I wonder how many people have benefitted from this idea. Do you recommend any Wedge pillow? There are a ton on Amazon and can't figure out which one would be better.

Many thanks in advance.

We did that in the past and the whole mattress and both of us would slide down.