The recommended dosage of metoprolol tartrate ranges between 100–450 milligrams (mg) daily. People using the immediate-release tablet may need to take it several times a day, and doctors advise that they do so either with or directly after a meal. Metoprolol tartrate is available either as an immediate-release tablet, as an intravenous injection, or in liquid form. The appropriate dosage of both metoprolol tartrate and metoprolol succinate depends on a person’s condition and how well that condition responds to the medication.