Are any side effects associated with using DuoFertility?
DuoFertility is completely safe to use and there are no significant risks or side-effects associated with using the fertility system. Although DuoFertility is entirely non-invasive, you might experience slight discomfort when wearing a DuoFertility adhesive for long periods of time, and should therefore test the patch on its own before wearing it for long periods of time, as well as alternating which arm it is on each cycle. More information about any potential skin irritations can be found here, and more details about the adhesives here.
