Gastroenteritis; decreased appetite, dehydration; insomnia, anxiety, depression, nervousness, confusional state, abnormal dreams, decreased libido, restlessness, altered mood, hallucinations; somnolence, dizziness, headache, paraesthesia, tremor, sedation, hypoaesthesia, memory impairment; vertigo; palpitations; flushing, HTN; dyspnoea; constipation, nausea, vomiting, diarrhoea, dry mouth, abdominal pain, dyspepsia, flatulence, aggravated oesophageal reflux; pruritus, hyperhidrosis, rash; arthralgia, back pain, muscle spasms, pain in extremity, myalgia; asthenia, oedema, pyrexia, chest discomfort, pain, drug w/drawal syndrome, chills; decreased wt; fall, contusion; blurred vision; dysuria.