I decided to buy this product based on a positive experience with the Probiotic Drops in its previous packaging (without vitamin D), which I obtained from a local store. The earlier version significantly alleviated my son's colic issues. However, the recent purchase for my daughter, featuring the new packaging with vitamin D, doesn't appear to have any noticeable effect. The only discernible difference is the packaging; my son's version was the old packaging. Considering the lack of positive results for my daughter, I am contemplating returning the product and seeking the previous packaging from a local store. I cannot genuinely recommend the new packaging, as it hasn't worked for my daughter.