Replied By Dr. Brandeis (San Francisco, Ca) on 10/28/2010
True. Glutamine works in 2 ways. First, it is the preferred source of fuel for enterocytes- the cells that line the small intestine. Second, it increases sIgA (secretory immunoglobulin A), an important immune cell. If the IBS is caused by an infection such as yeast or parasites, Glutamine will be helpful. However, symptomatic relief from glutamine should make you consider testing for parasites- but not through conventional labs such as Quest or Labcorp. The best lab I've found and use with all of my patients is Metametrix. -Dr. Andrew Brandeis