The first time my sister was pregnant she tried every product she could find for constipation. During her second pregnancy I suggested she drink seltzer water. I had read about it in a magazine. I also had cravings for seltzer water during my last 2 pregnancies and never had any problems with constipation. She told me she didn't like the taste and couldn't drink it. A few weeks later she let slip she was mixing it with juice and was actually regular for once.