Lopressor is used to treat Supraventricular tachycardia, Tardive Dyskinesia. The generic version is called Metoprolol tartrate. The average Lopressor cash price is about $64.76 for a supply of Tablet 50 MG 30 pcs. You can reduce your Lopressor cost by up to 75% with our free Lopressor discount card. Bring it to a participating pharmacy near you to save on your prescription medication.