There are no documented whey EAS Mass Factor side effects.
However, whey protein may cause an allergic reaction in people suffering from lactose intolerance. Whey protein that can contain between 1% and 6% of lactose, depending on the type used.
Severe or chronic whey protein overingestion can cause liver damage or failure.
As with any supplement, there may be unrecorded EAS Mass Factor side effects.
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