When I was about 24 I regularly would take feldene, I think it was, after footy without incident. One night I had severe stomach cramps and a friend gave me a couple of her naprogesics. I went into anaphylactic shock and was admitted to hospital. A few weeks later after footy I used feldene again as per my habit and went into anaphylactic shock once again.

I get itchy from many foods and many of the symptoms you discuss on your web page. Thanks for the page. Quite informative. I am now 45. - by email

Sue's comment:

Feldene (active ingredient Piroxicam) and Naprogesic (active ingredient Naproxen) are nonsteroidal anti-inflammatory drugs (NSAIDs) used as painkillers. NSAIDs are not suitable for people who are sensitive to salicylates because they can cross-react with aspirin which is a salicylate sometimes used as a salicylate challenge.

Professor Peter Gotzsche, a co-founder of the Cochrane Collaboration, the world's foremost body in assessing medical evidence, says that non-steroidal anti-inflammatory drugs - commonly used for arthritis, muscle pain and headaches - should be used as little as possible. He estimates that 100,000 people in the United States alone die each year from the side-effects of correctly used drugs, especially NSAIDs.

Even the name for these drugs, "anti-inflammatory", is not supported by evidence, he says. He has conducted a clinical trial and review of the evidence that has found there is no proof they reduce inflammation.

"These terms for our drugs are invented by the drug industry," he said. "They had a huge financial interest in calling these things anti-inflammatory. It lured doctors into believing that these drugs somehow also had an effect on the disease process and reduced the joint damage."
Read more http://www.smh.com.au/national/health/peter-gotzsche-founder-of-the-cochrane-collaboration-visits-australia-to-talk-about-dangers-of-prescription-drugs-20150204-136nqc.html