I have been getting cherry juice in the concentrate for years. One seller said it will stay good for 1 month after opening in the fridge. Also this can be put in the freezer and will stay good for a year, and it will pour right out of the freezer so I never have to thaw it out. This is what I do since it takes me a month to finish a quart bottle.
We noticed a difference in joint pain the first week, I noticed better sleeping after 1 and half weeks. We drink an 8 ounce glass per day, sometimes more. Cheaper than perscription anti-inflamatory drugs.
There is no added sugar in this product. And it is so concentrated that it only takes about 1-2 tablespoons of the juice in an 8-ounce cup of water to drink make a nice cherry juice beverage. Then I add 2 teaspoons of sugar before I drink it.
I've taken it as one tablespoon in the morning and one in the evening to balance out its effectiveness. However, sometimes when I forget to take it in the morning I just take two tablespoons in the evening. Both seem to work equally well. I think simply remembering to take two tablespoons each day is the most sensible criteria and not worry too much about doing it "just right".
According to the article Improved Antioxidant and Anti-inflammatory Potential in Mice Consuming Sour Cherry Juice (Prunus Cerasus cv. Maraska) (Saric) Plant Foods Human Nutrition 2009; 64:231-237 Tart Cherry Juice Concentrate delivers the highest levels of anthocyanin (as compared to Tart Cherry Juice and Tart Cherry Juice Capsules).