Today I have come with the all new Repfuel Sports Pista Kulfi Whey Protein because we all know that protein is our daily body need. Despite its health benefits, some people are concerned about its safety. That said, whey protein is safe for most people and a convenient way to increase your protein intake. Summary: Whey protein is generally safe and can help you build muscle and strength, lose weight, reduce your appetite and boost your metabolism.