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Question: Immunocal is much more expensive than other whey protein isolates - is it worth the extra cost?
Answer: Immunocal, also known as HMS90 (Immunotec Inc.) is a patented whey protein isolate that has been shown to raise levels of glutathione in people. However, Immunocal costs up to five times as much as other whey protein isolates, and there is not enough evidence to suggest it provides an advantage over less expensive brands. For more on this, plus our tests of popular protein products, see the Protein Powders and Drinks Review >>