Whey Protein

Isolate is more processed, has more protein per gram (90% vs 80%), fewer carbs, and almost no lactose. Concentrate is cheaper and has more natural milk compounds. Both work well.

Timing matters less than total daily protein. That said, whey digests quickly so it's ideal post-workout or when you need protein fast. For sustained energy, pair it with slower foods.

Yes, for most people. Whey is just a milk protein. If you're lactose intolerant, try isolate. Those with kidney disease should consult a doctor before high protein intake of any kind.

There's no strict limit, but most of your protein should come from whole foods. 1-2 scoops daily is reasonable. More than that, you're missing out on the nutrients in real food.