@rundocuri- I have taken monk fruit for cold symptoms, and I think that consuming it did help to relieve my upper respiratory discomfort. My throat soreness went away, and my congestion seemed to break up after drinking tea that contained monk fruit.
Though you can take monk fruit in the raw form to alleviate cold symptoms, I find that drinking monk fruit tea is much more soothing when I'm sick. I think that the combination of the fruit extract and the warmth of the tea act as expectorants.
In addition to its natural medicinal benefits, it is also helpful to drink the tea as opposed to eating raw monk fruit because staying hydrated is crucial to recovering from cold symptoms.