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Because thymus can come from animals, there is concern about possible contamination with diseased animal parts. Any products made from contaminated or diseased organs might present a human health hazard. However, so far, there are no reports of disease transmission to humans due to use of contaminated thymus extract.
Special Precautions & Warnings:Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking thymus extract if you are pregnant or breast-feeding. Stay on the safe side and avoid use.
Weakened immune system: People who have a weakened immune system (HIV/AIDS patients, for example) or people who are taking drugs to weaken their immune system (organ transplant recipients, for example) have a higher risk of infection. These people should avoid thymus extract products unless these products are certified germ-free.
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.