Assertion: melatonin's effect | /r/HasProperty | somnolence
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text: Side effects may include somnolence (sleepiness), headaches, nausea, diarrhea, and abnormal dreams, irritability, nervousness, restlessness, insomnia (trouble sleeping), anxiety, migraine, lethargy (lack of energy), psychomotor hyperactivity (restlessness with increased activity), dizziness, hypertension (high blood pressure), abdominal pain (stomach ache), dyspepsia (heartburn), mouth ulcers, dry mouth, hyperbilirubinaemia (high blood levels of bilirubin, a breakdown product of red blood cells, which can cause yellowing of the skin and eyes), dermatitis (skin inflammation), night sweats, pruritus (itching), rash, dry skin, pain in the extremities (arms and legs), symptoms of the menopause, asthenia (weakness), chest pain, glycosuria (sugar in the urine), proteinuria (protein in the urine), abnormal liver function tests, increased weight, tiredness, mood swings, aggression and feeling hungover.