Convulsive seizures, peripheral neuropathy, dizziness, vertigo, incoordination, ataxia, confusion, irritability, depression, weakness, insomnia; nausea, headache, anorexia, vomiting, diarrhoea, epigastric distress, abdominal cramping, constipation, metallic taste, furry tongue, glossitis, stomatitis; reversible neutropenia (leucopenia); T-wave flattening; urticaria, erythematous rash, flushing, nasal congestion, dry mouth (or vagina or vulva), fever; dysuria, cystitis, polyuria, incontinence, sense of pelvic pressure; proliferation of Candida in the vagina, dyspareunia, decreased libido, proctitis, fleeting joint pains; taste modification of alcoholic beverages.