You should be receiving around 25-30 grams of protein in each serve of plant protein powder.
Plant protein powder may not be better than whey, as it greatly depends on your individual needs.
Plant protein powder is derived from plant sources high in protein and as a a non-animal sourced means of boosting protein intake.
The only complete plant protein source is soy, but blended plant proteins can provide a complete source.
There are a great many benefits of plant protein powder, but their individual benefits are as varied as the number of plant based sources.
Yes, all protein powder can expire and spoil, but they do last a good long time first.
When used correctly, plant protein powder should not cause diarrhea unless you have a food intolerance.
While plant protein powders do not cause constipation alone, excessive consumption of protein without sufficient fiber and hydration can cause constipation.