Possible side effects:
Side-effects of the SSRIs include gastro-intestinal effects (dose?related and fairly common?include nausea, vomiting, dyspepsia, abdominal pain, diarrhoea, constipation), anorexia with weight loss (increased appetite and weight gain also reported) and hypersensitivity reactions including rash (consider discontinuation?may be sign of impending serious systemic reaction, possibly associated with vasculitis), urticaria, angioedema, anaphylaxis, arthralgia, myalgia and photosensitivity; other side-effects include dry mouth, nervousness, anxiety, headache, insomnia, tremor, dizziness, asthenia, hallucinations, drowsiness, convulsions , galactorrhoea, sexual dysfunction, urinary retention, sweating, hypomania or mania , movement disorders and dyskinesias, visual disturbances, hyponatraemia (may be due to inappropriate antidiuretic hormone secretion), and cutaneous bleeding disorders including ecchymoses and purpura. Suicidal ideation has been linked with SSRIs but causality has not been established.
Side effects of Prozac:
possible changes in blood sugar, fever, neuroleptic malignant syndrome-like event; also reported (no causal relationship established): abnormal bleeding, aplastic anaemia, cerebrovascular accident, ecchymoses, eosinophilic pneumonia, gastro-intestinal haemorrhage, haemolytic anaemia, pancreatitis, pancytopenia, thrombocytopenia, thrombocytopenic purpura, vaginal bleeding on withdrawal, violent behaviour; hair loss also reported
Its should say all this in the leaflet with your medication. BUT companies have to put every side effect reported, most are very very rare. Nausea and dizziness are the most common I think.