Hydralyte Effervescent Electrolyte Tablets Apple Blackcurrant Flavoured relieves symptoms of dehydration and helps replace water and electrolytes lost due to vomiting, diarrhoea, heavy sweating, vigorous exercise and occasional hangovers.Hydralyte Effervescent Electrolyte Tablets Apple Blackcurrant Flavoured relieves symptoms of dehydration and helps replace water and electrolytes lost due to vomiting, diarrhoea, heavy sweating, vigorous exercise and occasional hangovers.Dehydration due to:- Vomiting & diarrhoea.- Heat.- Travel.- Vigorous exercise.- Heavy sweating.- Occasional hangovers.- Heat & excessive exercise at work.Signs of mild dehydrationSticky or dry mouth, increased thirst, lethargy, decreased urine output, dark yellow urine.No added GlutenNo artificial flavoursNo artificial coloursKosher CertifiedPreservative Free