[kelnage]

I think you probably know this, but whey is suitable for vegetarians (being a byproduct of curdling milk) - and whey-based protein supplements are often vegetarian. Vegan protein supplements are generally extracted from things like peas, beans or hemp.

[eloff]

I do know that, but thanks for clarifying. The word vegetarian in this case refers to being composed of only plant products. Maybe it can't be used that way.

[Talanes]

Your meaning would have been absolutely clear in any discussion other than a nuanced discussion of vegetarian vs vegan options, really.