HealthTeacher provides timely, unbiased medical information to physicians, healthcare professionals and patients. With more than 150,000 readers across several dozen therapeutic categories, HealthTeacher helps pharmaceutical and healthcare companies to establish brands and build rapport with key audiences. Petra led a $5 million buyout by investing $2.5 million in preferred stock along with Chrysalis Ventures and later invested an additional $1.6 million in support of HealthTeacher's growth initiative.