The 'unflavored' is difficult to drink on its own (not impossible), it taste bitter and chemical-like, would be much better if you mix it with coffee or juice.
The biggest issue I have with the product is the serving measurement, no scoop is provided and thus, causes a lot of measurement issue. '2 1/2 teaspoon per serving', there are different teaspoon sizes and also how much volume to fill? Full? Flat? or slight bump (like mini hill)?
In the future please do provided a scoop for convenience. Also, MORE FLAVOUR option would be better as well