I've got a cold that has stopped streaming and is now 'bunging', causing earache and sinus pain as the most troublesome symptoms. I need to clear it for the Strathpuffer next weekend. Are there any decongestants that are 'race legal' for around race time and won't keep me up all night for just now? I need my sleep and I'm buzzing and it's 4 AM.
All advice gratefully received.

