1. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved. August 2008 iPhone/iPod touch survey

2. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 2 Survey Overview Two surveys completed by 303 U.S. physicians and 304 consumers Participants downloaded Epocrates Rx for the iPhone/iPod touch within first week of launch Surveys completed in August 2008 Source: Epocrates, Inc. Market Research Panel, 2008

3. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 3 More than a phone – primary uses of iPhone/iPod touch by physicians What do you primarily use your device for?* *Respondents may select up to 3 (excludes responses below 5%) Epocrates is the most used healthcare application** **Respondents asked to list top 5 health-related applications used

4. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 4 Epocrates availability for iPhone/iPod was important to over 70% of physicians How important was Epocrates availability in your decision to purchase the device?

5. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 5 Nearly 70% of consumers downloaded Epocrates to monitor their healthcare Why did you download the Epocrates application? *Respondents may select all that apply; excludes responses below 10% Job use examples: Dog trainer Police officer Forensics/criminalist Guidance counselor Lawyer Other (fill-in): To be able to talk to my fiancé who is a doctor To demo it to my doctor

6. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 6 Majority of physicians use Epocrates daily; half plan to increase use Since download, how often have you used Epocrates? How often do you anticipate using it in the future?

7. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 7 35% of consumers report using Epocrates several times per week Since download, how often have you used Epocrates? How often do you anticipate using it in the future? Primary reasons for less - Dont have a need for the info - Written for healthcare professionals

8. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 8 Majority of physicians use their iPhone during a visit; increases patient confidence Have you used your iPhone during a patient visit? How would you characterize patients reaction to you using Epocrates and the iPhone during their visit?* *respondents may select all that apply

9. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 9 44% of consumers report feel more confident with their provider using Epocrates If provider used Epocrates, how would that impact your confidence level?* *0% select less confident

10. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 10 Epocrates prescribing and safety info most used features by physicians What are the features you have used the most in Epocrates so far?* *Respondents may select up to 3; excludes responses above10%

11. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 11 Physicians share information about drug reactions, safety & interactions with patients What information are you most likely to share with patients when you are using Epocrates? *Respondents may select up to 3

12. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 12 Consumers use Epocrates for drug safety and identification What are the features you have used in Epocrates so far?* *Respondents may select up to 3; excludes responses below 10%

13. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 13 >65% of consumers have/will recommend Epocrates to their healthcare provider Have you recommended Epocrates to your physician or other healthcare provider? Have you ever talked to your healthcare provider about info you found in Epocrates? My roommate had a bad allergic reaction to a drug. We contacted her doctor with Epocrates information and he changed the medicine.

14. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 14 Over 90% of physicians believe providers should use a reference like Epocrates Do you agree that all healthcare professionals should use a clinical reference such as Epocrates? Epocrates is so important to my clinical practice that I dread being without it. It seems impossible that anyone could remember all drug interactions, even for frequently used drugs.

15. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 15 85% of consumers believe all healthcare providers should use a reference like Epocrates To what degree do you agree that all healthcare professionals should use a clinical reference such as Epocrates? Reasons why: It never hurts to double check yourself. Ever watch House? It could quickly prevent a mistaken prescription No one can remember everything all the time! I would have serious concern for a healthcare professional who did not use the most recently updated medical information available to him/her

16. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 16 Survey Background - physicians Survey includes 303 U.S. physicians who use Epocrates software Downloaded Epocrates Rx for the iPhone/iPod touch within first week of the product launch Apple devices owned by participants –iPhone = 93% –iPod touch = 12% Survey completed in August 2008

17. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 17 Music applications – top downloads for physicians What non-healthcare related applications do you use the most on your iPhone/iPod touch? Pandora Weather bug Sports tap Shazam New York Times Facebook AOL Radio

18. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 18 Survey Background - Consumers Survey includes 304 U.S. consumers who use Epocrates –Male: 80% –Female 20% Downloaded Epocrates Rx for the iPhone/iPod touch within first week of the product launch Apple devices owned by participants –iPhone: 78% –iPod touch: 17% –Both: 5% Survey completed in August 2008

19. CONFIDENTIAL AND PROPRIETARY © 2008 Epocrates, Inc. All rights reserved.Slide | 19 >50% of consumers prefer Epocrates iPhone version over health websites What health websites do you use for healthcare information? *respondents may select all that apply; excludes responses below 10% Do you prefer the information in Epocrates on your iPhone to the websites you selected? I don't always have a computer at hand, but my iPhone is always with me. The interface and information supplied is far superior.