It did not work on my wife's dengue, by the time I got the MMS she was out of the hospital and pretty much over it. I however have had dengue twice since then. I took 6 drops of sodium chlorite and six drops of citric acid mixed together with some water added twice in an hour and half time period and was over it within two hrs of the second dose. I took this both times and have had other friends use the same dosage with the same results.