Several. I will list some her, not in any order. Nausea, diarrhea, frequent urination, tramor, sedation, feeling dulled, acne, psorasis, increased appetite, weight gain, dizzyness, if it effects the thyroid then there is dry skin, hair loss, fatigue, weight gain, constipation although these can happen with lithum without thyroid involvement.
See below. The side effects of lithium sometimes depend on the dose, with more side effects seen at higher doses. Common side effects are tremor, fatigue, increased thirst, increased urination. Many of my patients on lithium do very well, both from the point of symptom remission, as well as lack of side effects. Blood levels need to be checked from time to time. Please ask your doctor for more information.