Wt gain, sleepiness, increases in blood prolactin levels, orthostatic hypotension in the early stages of treatment. Changes in the levels of some blood cells, circulating fats & early in treatment, temporary increases in liver enzymes; increases in blood & urine sugar level; increases in levels of uric acid & creatine phosphokinase in the blood; feeling more hungry; dizziness; restlessness; tremor; dyskinesias; constipation; dry mouth; rash; loss of strength; extreme tiredness; water retention leading to swelling of the hands, ankles or feet; fever, joint pain & sexual dysfunctions eg, decreased libido in males & females or erectile dysfunction in males.