Hi, Jared. Here are some of the ones we use at home:
1. Drinking of 2 tbsp of freshly squeezed calamansi everyday (morning and evening) + drinking lots and lots of water
2. Drinking warm honey+calamansi juice (at least twice a day)
3. Breathe in some steam to loosen up stuffy nose (putting boiled water in a pale with mint leaves)