OPTIMUM NUTRITION has been trusted to provide the highest quality in post-workout recovery. pre-workout energy, and on-the-go sports nutrition for over 35 years and in 90+ countries. After careful supplier selection, each ingredient is tested to assure exceptional purity, potency and composition. We hold ourselves to the highest production standards, all so you can unlock your body's full potential. For best results, mix up your shake 30-60 minutes after you work out or have it as an anytime snack in your balanced, high-protein diet.