Is gold standard on whey isolate safe and good for weight loss and lean shape.

Yes : Hydrolyzed whey protein is much better tolerated than lesser expensive formulas. This type tastes better, mixes better, doesn't cause stomach aches and easier digests. Digesting protein burns calories. Protein drinks are supplements commonly used to support nutrional needs for pre and post exercise. It is one part of losing weight, combined with weight lifting, cardio and reduced carbs

Whey is good: for protein supplementation and that can help with weight loss if it is taken instead of, not in addition to drinks that contain sugar and carbs. With exercise, weight loss can lead to lean shape. Look for checklists on weight loss and exercise. Good luck!