|http://pgx2.com/. (This is not a promotional post). However, the function of this webpage and service is not clear. The data management policy is also not clear. Interestingly I think we can use this service even without registering, so ideally this may serve as an ideal service for the learners at least to understand the implementation of several guidelines especially from CPIC in a user-friendly manner. Details and specific guidelines and drug metabolizing enzymes ontogeny information (especially for paediatric populations) seems like not yet incorporated. I appreciate the developers of this resource to help many users, when there are many private organizations are investing in this area to provide such services at cost. A clear responsibility by giving a clear information on the webpage, and the process this resource can offer service to implement precise dose of medication or a personalized advice.