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Overview

The human thymus gland is responsible for making important immune cells, such as T-cells. Thymus extract comes from the thymus glands of cows.

Thymus extract might help increase immune function. But the quality and potency of thymus extract products can vary greatly.

People use thymus extract for a weakened and enlarged heart (dilated cardiomyopathy) and infections of the airways. It is also used for asthma, food allergies, hay fever, cold sores, and many other conditions, but there is no good scientific evidence to support most of these uses.

Since thymus extract products come from cows, they are at risk for contamination with diseases. This has raised concerns about whether thymus extract can cause infections in humans, but there are no reports of this happening.


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