Epocrates Rx for Android
I use the interaction checker on a daily basis in both inpatient and outpatient settings. it helps to prevent complications and untoward reactions.
Formulary feature. I use that to make sure my prescriptions are covered by the patient's plan and to see if there is a special program eg $10.00 Wallmart or Target medication that will work for patients who may not have enough insurance.
Great application. Interaction check and pill identification are very helpful. Also love the CME feature.