I've tried it. It didn't solve my problem with the strength of orgasms, and it's messy, but it improved arousal a little. I've heard other women who find it helpful, too. Another problem with it, though, is, it's expensive.

According to their website, http://www.zestra.com/, you can try it free if you buy it now (pay shipping $4.95), and get two packets free. I hope this doesn't constitute "advertising," but I'm just mentioning it since it might be useful.