The app is a comprehensive resource for a wealth of drug information, which also includes a very useful interaction checker, medication organizer and reminder, and chat and forum. Interaction Check is easy to use, and the tool is just as simple to understand for users to ensure medication compatibility.

Pocket Pharmacist is an app made by clinical pharmacists for patients, caregivers, physicians, nurses, students, and other healthcare professionals. The Medication Guide app is made for both healthcare providers and patients, and the users can switch from one version to the other at any time. One of the features included is an interaction checker which checks for a medication's potential interactions with other medications and supplements, as well as particular medical conditions, pregnancy, and breastfeeding. The app allows users to search through an extensive drug database to get a variety of medication-related information. The website is one of the most popular, comprehensive and up-to-date source of drug information that is also available as a free Android and iOS app.

Here, we have listed some of the most popular drug interaction tools for physicians and their patients. Some of these interaction checkers come as standalone apps. Many of them use mobile apps, mostly the comprehensive drug reference tools, which also include drug interaction checker features. This is the reason why it is no longer practical for clinicians to rely on memory alone to avoid potential drug interactions. In others, however, interactions can be extremely dangerous. Also, multiple drug regimens carry the bigger risk of adverse interactions - in other words, the more medications you are on, the higher the risk that a few will interact with each other. Since a large number of new medications are introduced every year, new interactions between various drugs are also increasing. A drug interaction can be defined as a change in a drug's effect on the body when it's taken together with other drugs or reacting to certain other substances, sometimes even something as simple as grapefruit. A drug interaction can delay, decrease, or enhance the absorption of a drug, which can decrease or increase the action of either or both drugs or cause unwanted side effects.

Drug reference tool