BSN have been giving back to their fans since the start of the year. First with the release of their 10lb Syntha-6 and then with the launch of the massive 70 serving AminoX. In between the size variant releases the brand also produced a number of new and exclusive flavors which they have done so again for their veteran supplement Syntha-6. The product has begun shipping to the nutrition giant GNC in peanut butter cookie. Not only will fans now be able to get their 2.91lb protein powder in 13 different flavors, but BSN have also cooked up another variant for their weight gainer True Mass. In the coming weeks the brand’s 700 calorie protein will be adding chocolate peanut butter to it’s menu. Pushing it’s total number of options up to 6.