Quinacrine is a medication used to treat various medical conditions, including malaria, lupus, and certain types of arthritis. It is also known as mepacrine and atabrine. Other synonyms for quinacrine include chloroquine, hydroxychloroquine, and mefloquine. These medications are all commonly used to treat malaria and other parasitic infections. Other related terms include antimalarial drugs, antiprotozoal drugs, and antirheumatic drugs. While all of these medications have similar indications and mechanisms of action, they may differ in terms of potency, side effects, and other factors, making it important to consult with a healthcare provider before beginning any new medication regimen.