The key for the symbols is available at the bottom of the Medication Tool page. You can also hover your cursor over the symbol to view what it means.
Red: A doctor may consider choosing an alternative to this medication.
Orange: A doctor may consider additional factors related to use of this medication which could impact dosing decisions or selection of an alternative medication.
Blue: A doctor may consider following standard dosing recommendations and precautions for this medication.
Gray: Medication guidelines or label information not available for this phenotype.