A commonly recommended dosage is 1–2 scoops (around 25–50 grams) per day, usually after workouts.

It’s recommended that you follow the serving instructions on the packaging.

Keep in mind that if your protein intake is already high, adding whey protein on top of your current intake may be completely unnecessary.

Concerns about protein causing kidney damage and contributing to osteoporosis are unwarranted.

In fact, protein has been shown to protect against osteoporosis, while having no impact on healthy kidneys (56, 57, 58, 59).

However, people with current kidney or liver issues may want to avoid whey protein or at least consult with a medical professional before taking it.

Eating too much whey protein can cause digestive issues such as nausea, flatulence, diarrhea, pain and cramping. Some people are also allergic to whey.

If you can't tolerate regular whey protein concentrate, isolate or hydrolysate may be more appropriate. Alternatively, you could simply avoid whey protein and eat other protein-rich foodsinstead.

But generally speaking, whey protein has an excellent safety profile and most people can consume it without problems.

Whey protein is an exceptionally healthy way to add more protein to your diet. It’s a quality protein source that is absorbed and utilized efficiently by the human body.

This is particularly important for athletes, bodybuilders or people who need to gain muscle mass and strength while losing fat.