What is the difference between diclofenac potassium and diclofenac sodium?

Diclofenac potassium and diclofenac sodium are both forms of the same medication, diclofenac, which is a nonsteroidal anti-inflammatory drug (NSAID). The main difference between the two is the salt form they are in. Diclofenac potassium is in the potassium salt form, while diclofenac sodium is in the sodium salt form. This difference can affect factors such as how quickly the medication is absorbed in the body and how it is metabolized.