Over-the-Counter (OTC) Treatments
Low-dose Naltrexone might be cheap cure for many IBS suferer. It also shows effectiveness with chronic digestive diseases like Celiac Disease, Chronic Fatigue Syndrome, Crohn's Disease, Hashimoto's Thyroiditis etc.
http://www.lowdosenaltrexone.org/#What_diseases_has_it_been_useful_for
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