Not so true in my case. I had undiagnosed esophageal spasm for 25 YEARS! I woudl go to the er in so much pain I was sure I was having a heart attack. After years of taking NSAIDs for spinal pain. I finally realized these things were often triggering the esophageal pain. I found a GI doc who treated me for the spasm and told me to stay off the NSAIDs. When I had to go to the ER for severe spinal pain (2 ruptured discs) I explained I could not take NSAIDs. The nurse, in front of me, told the MD when he came in that I was "allergic" to NSAIDs and then rolled her eyes. I tried to stop her and say I wasn't allergic but sensitive. In the end, they gave me iv toradol, which did indeed take away the back pain, but it sent me into the worst esophageal spasm EVER -- so much so I was sure I was going to die right there. I read later that GI irritation, even when given iv, is a side effect. So they ended up having to give me morphine to stop the severe pain they caused. All because they thought I was lying and a seeker. 25 years of trying to find relief from the pain certainly gave me insight to what works and what does not.