After our analysis, we came to the conclusion. Dr. Mercola Pro-Optimal Whey is the winner in this comparison and earns 5.1 VSR. Its rival USN ISOPRO receives 6.7 VSR. The enormous gap in rating was affected in the first place by the price, the cost of 25 grams of pure protein of Dr. Mercola Pro-Optimal Whey is $ 3.43 as against $ 1.22 of USN ISOPRO. The serving of Dr. Mercola Pro-Optimal Whey contains 17 grams protein as against 27 grams in one USN ISOPRO serving. At the same time, a serving of Dr. Mercola Pro-Optimal Whey costs $ 2.33, and a serving of USN ISOPRO costs $ 1.32.
The Dr. Mercola Pro-Optimal Whey composition contains minerals in an amount of 6 as against 3 in USN ISOPRO.
Dr. Mercola Pro-Optimal Whey has just one flavour, Vanilla. USN releases 4 flavors of ISOPRO.
Dr. Mercola Pro-Optimal Whey and USN ISOPRO have only one size, Dr. Mercola Pro-Optimal Whey has 1.2 lb and USN ISOPRO has 1.65 lb.
We recommend buying USN ISOPRO.