One of the impressive looking features lets you import medical records. There's a page of links to providers of internet-based health records. If you know who has your records, you can set up an account with them and ask them to transfer your records to Google. They're supposed to be your records, after all. The problem for me is that I haven't a clue as to which provider may have my records. I guess my doctor might know.
Another potentially neat feature lets you add your medications to your profile. There are easy-to-use pull-downs for generic and brand name drugs, as well as appropriate selectors for dosage and frequency. All of this is conveniently hyperlinked to drug information sites. While it looks like an encouraging start, however, I'm already disappointed in what it doesn't do. There's a Prescription column that I cannot enter data into or edit. This is where I would hope to be able to put in my pharmacy's prescription number, expiration dates and related information.
Google Health is like a boat-load of lawyers sinking into the ocean: a good start. It's still flawed in the type of information that I would like to be able to put into it, but I'm willing to give it a tentative one thumb up.