A Cochrane review [Abstract] 1 included 1 study with a total of 117 subjects. The study was undertaken in Bangladesh. Vitamin C at a dosage of 1 g/day was administered intravenously in the treatment of tetanus patients alongside conventional treatment. At recruitment, the participants were stratified into two age groups and the results were reported by age. In the children aged 1 to 12 years (n = 62), vitamin C treatment was associated with a 100% reduction in tetanus mortality (95% confidence interval from -100% to -94%). In people aged 13 to 30 years (n = 55), vitamin C treatment was associated with a 45% reduction in tetanus mortality (95% confidence interval from -69% to -5%).
Comment: The quality of evidence is downgraded by study quality (several issues) and poor reporting.
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