The medications are Fluoxetine 60mg(antidepressant), Lithium 600mg (mood stabilizer) and Amisulpride 50 mg (antipsychotic). In the question the diagnosis is not mentioned, but the The lithium 600 mg is mostly used in Bipolar disorder. Using Low dose antipsychotic medication (Amisulpride 50 mg) is also the one of the strategy to stabilize the illness. To decide about the need for this in your treatment the deatiled assessment will be required.
Next Steps
You can discuss about your diagnosis and reducing the medications if you are facing any side effects, with your Psychiatrist.