Can you substitute metropolol tartrate for metropolol succinate?

Metoprolol tartrate and metoprolol succinate are both forms of the medication metoprolol, but they are not interchangeable. Metoprolol tartrate is an immediate-release formulation, while metoprolol succinate is an extended-release version. This difference affects how they are dosed and how long their effects last in the body. Always consult a healthcare provider before making any changes to your medication regimen.