Your mom should see about weaning herself off some of them and I'd bet a lot of her symptoms would disappear. I still maintain most of the symptoms we are complaining of besides the initial FMS ones are caused by the DRUGS we are given and not monitored for side effects. Docs tend not to consider side effects when we complain of a new health problem. It took about 2 months on estrogen before the worst of my "new" symptoms manifested themselves. The immediate one was the acid. Slowly over a period of 9 months the others made themselves felt, VERY painfully.
When I was put on Lodine the acid got so bad that I was on a strong dose of Tagamet 2 times a day and it BARELY phased the acid.
I've gotten more relief from the vit/min therapy than I ever did from the chemicals. Some of the natural stuff also causes the GI side effects for me. Black Cohosh is one of them as is cronium pictolate.
I now closely monitor every thing I put into my body for side effects, which is a lesson I learned the hard way.
Out of desperation I went to the Internet and over and over found about a condition called "leaky gut syndrome". I gave her the info and told her to decide for herself if she thought it made sense.
She had liver damage from all the drugs. Her change in direction from drugs to natural therapies and diet have made a huge difference but she's still having trouble with fibro.
I like Dr. Walt Stoll's webpage.