Nutri West DSF is my favorite stress formula. I always have the large bottle of Nutri West DSF in my cupboard. I want it to be available and it is a better value to buy it in the larger size. I use Nutri West DSF if I am going to be stretched thin at work, or incredibly busy. I also take Nutri West DSF if I am exposed to sickness, or if I am run down and tired. If I am going to be travelling or flying on a plane, I take Nutri West DSF. My family also takes Nutri West DSF, so it is important to always have it on hand. I notice a positive difference in how I feel physically and my energy level is much better when I take Nutri West DSF. Nutri West DSF helps me to get through stressful times in my life. Nutri West DSF is great and it didn't take long to notice a significant difference in how I felt physically. It lasts quite awhile so the large bottle is a good value. My cupboard is dark and cool, so I have never had trouble storing it. I recommend Nutri West DSF to anyone who needs a stress formula. This is a high quality product with good ingredients.