Step 1: Go to the Whey Reloaded Amazon listing here
Step 2: Select your flavor and add it to your cart. Make sure your Whey Reloaded says "Sold by Betancourt Nutrition"
Step 3: Proceed to checkout
Step 4: Under "payment method", add the promo code 15RELOADED
The code will only work on items with Sold by Betancourt Nutrition.
That's it! You should be set.