I didn't have the chance to read all the posts, but my son is 6 1/2 months and has had chronic constipation for the last 2 months. I had similar concerns about giving juice... I ended up buying some organic preservative/sugar-free prunes. I boiled them and gave my son the water/juice from boiling. It worked wonders and I felt a bit better about it than just giving him bottled juice. My pediatrician said to avoid carrots and bananas, both of which are constipating. (As well as rice cereal, not an issue for you though.) We have tried everything! (Different foods, etc). We finally started giving 1/4 tsp psyllium in his food once daily. (natural fiber). HTH
-megan