Is the extended-release preparation of lithium carbonate better?

Many clinicians continue to prescribe lithium carbonate immediate-release rather than the extended-release (or controlled-release) preparation. I only prescribe extended-release preparations of lithium because they are believed to have various advantages over immediate-release preparations (Girardi et al., 2016) and the price difference is small. The potential advantages are: 1. More consistent serum lithium concentrations 2. Fewer…