Constipation in infants

I have a 1-month old little girl, and had a serious problem with her bowels not moving. I tried the Kayro trick and I also used a Q-tip and Vaselene to stimulate her to have a bowel movement. (This is not good because if you don't know what you are doing, it can harm the baby and they can get dependent on this) Nothing worked. I called her doctor, and I was surprised by what she told me. She told me to give her 1 oz of PEAR juice. It can be baby or adult as long as it's 100% juice. It worked o.k. I moved it up to 1.5 oz and it has been working like a charm for 3 weeks now!! I like it because it's all natural, and it's actually good for her. It doesn't work instantly, and sometimes takes almost a whole day to work after she drinks it, but with patience it works every day. I was told to try 1 oz apple juice to 1 oz water also, but the pear juice is working so well, I haven't had to try anything else. I hope some other parents can benefit from this!