The tablet should be placed on the tip of the tongue and quickly washed down with a small draught of water or other liquid. One tablet each night, commencing on the night before travelling. One tablet to be taken 1 - 2 hours before the journey commences. One tablet followed by a second tablet the same evening and a 3rd tablet the following evening.
Prompt treatment is important.
Additional tablets may safely be taken as a preventative or when they appear to be needed but it will seldom be necessary to give more than 4 tablets in 24 hours or to repeat a dose in less than 8 hours.