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The potential side effects of beta glucans, when taken by mouth, are not known. When used by injection, beta glucans can cause chills, fever, pain at the injection site, headache, back and joint pain, nausea, vomiting, diarrhea, dizziness, high or low blood pressure, flushing, rashes, decreased number of white blood cells, and increased urine. People with AIDS who take beta glucans have developed thickening of the skin of the hands and feet.
Do not take more than 15 grams per day by mouth and do not use it for longer than 8 weeks.
Do not use beta glucans if:
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.