Diazepam alone may be more effective in treating tetanus than combination of phenobarbitone and chlorpromazine, but the evidence is too weak to support change in current clinical practice Diazepam for Treating Tetanus.
Intravenous vitamin C seems to reduce death rates in people with tetanus, but the results are based on a single poor quality and poorly reported controlled trial. There are no evaluations of vitamin C as a prevention for tetanus Vitamin C for Treating Tetanus.