Boomerexpert hi! I got a wedge memory foam topper for my mattress about six months ago. I did not know very much about memory foam but I thought it’s just a wedge and it is wonderful... but looking back at my doctors appointments and how much pain I was having in the last six months. I have been on so much different medication for pain like never before. I did some research on it and it did say a lot about people with lung disease should not use a memory foam mattress. You can get really sick from it so I don’t know if anyone has one or have any information on it. I would love to know. Thanks Rita.