OCA Web Forum User "Tater_Chip" posted this question and response: "Due to the recent email from OCA (Organic Bytes #170) covering MSG I was very alarmed to learn that whey protein, especially in isolate and hydrolyzed form are basically forms of this substance. I just purchased Solgar "Whey to go" at my local health store, Mount Hope Foods. Does anyone know the relationship/safety of whey protein powders, since they are associated with MSG?"
Response: "I got a phone call today from Solgar. They told me that their processes do not create MSG because they use no sodium. So even though free forms of glutamic amino acids are in the formula, there is nothing for them to bind with to make the dangerous form of MSG. Now this may not be the case with cheap formulas widely available. In my opinion, I would check for sodium content on the nutrition label. If it has sodium, it could bind with the glutamic acids and form MSG unintentionally. At any rate, it is something to watch our for when buying protein powder. This rule of thumb can actually apply to other protein powders as well – not just whey. You must watch out for it in soy especially, but it may also be in pea protein powder….."