Medical Handheld Resources1) ePocrates is the #1 medical handheld application used throughout the World. Updated daily, it includes a detailed PDR on sever thousand drugs. The paid version adds information on herbal and alternative meds along with references.
Sign up for an ePocrates account here: http://www.epocrates.com
2) The AAFP PDA Center has the best compilation of PDA resources for Family Physicians. Here you will find a wide selection of PDA hardware and medical software, specifically selected to be useful in your practice or in your everyday life. Access the AAFP PDA Center here: http://aafp.pdaorder.com/welcome.xml
3) PDA Cortex is a well organized and very resourceful medical PDA application site including applications for nurses. You can jump to PDA Cortex from here: http://www.rnpalm.com
4) Other useful medical PDA resources:
http://www.pdamd.com/vertical/products.xml
http://www.healthypalmpilot.com/
http://www.collectivemed.com/
5) General PDA application resources:
http://www.handango.com/
http://www.palmgear.com/
http://www.tucows.com/
http://freewarepalm.com/