This product is the best, and the only reason I a giving it 4 stars instead of 5 is because it's such a small amount of berries for the price, and I buy them often. Second, the effect doesnt last that long, However, with all that said they really help me to eat sour berries strawberries, and salad. I love fruit, but some time certain fruits can be a bit bitter and these berries DO THE JOB. Perhaps, I should just invest in a plant. I hope this helps anyone try to decide to purchase these berries.