With portals like Healtheon and Drugstore.com betting that pharmaceuticals and medical information will be the next big ecommerce category, OnHealth Network company has signed with Advance Internet Inc, iSyndicate and Planet Direct to distribute its own content through their services. OnHealth has agreed to provide its personal health tracker, daily news briefs, condition centers, health tips, in depth reports, columns, resource links and city health guides to each of the content gateways. With its distribution lines thus expanded, OnHealth claims to have added millions of customers to its reach. The company wants to be the leading provider of health-related information to adults, especially women. It needs to hurry; the field is already getting crowded.