J.,
here are quite a few suggestions,
http://www.mamasource.com/request/18162964779499520001
including mine = i did not use ANY medications while my children were growing up, so there is my 'organic' advice there, too.
As to the coughing period, I'd suggest in the morning, and in the evening before going to sleep, to make Malt-O Meal porridge and NOTHING COLD to drink (this, until sniffles and coughing end)! Very warm porridge, before "descending into stomach, is slowly going through that 'tube' which is so close to bronchi and lungs: it warms the system from within, which helps a lot.
All the best, wishing you both to recover soon!