ataxia. The most common side effects are lethargy and weight gain (up to 2 kg). The less common side effects of using lithium are blurred vision, a slight tremble in the hands, and a feeling of being mildly ill (malaise).

In general, these side effects occur in the first few weeks after commencing lithium treatment. These symptoms can often be improved by lowering the dose. Long-term lithium therapy also carries risks such as hypothyroidism and chronic kidney disease, requiring