A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.
Vaccine combinations merge antigens that prevent different diseases or that protect against multiple strains of infectious agents causing the same disease, into a single product. This reduces the number of injections required to prevent some diseases.
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Data sources include Micromedex® (updated Apr 27th, 2015), Cerner Multum™ (updated Apr 20th, 2015), Wolters Kluwer™ (updated Apr 6th, 2015) and others. To view content sources and attributions, refer to our editorial policy.