I was seriously into Homeopathy for a while. Studied it quite a bit. Found a good Homeopath to consult, too. She gave me a personal 'first aid kit' of remedies for colds.
And I remember Kali Bich. It's for stringy catarrh.
There are SO many different homeopathic remedies and the trick is to treat the PERSON not the symptom, because one catarrh remedy may be good for you but not for me because we are so different - and I found that by the time I or the Homeopath had figured out the exact remedy for the current set of symptoms, the cold was on it's way out naturally anyway.
Now I'm more into old fashioned things.
I now think once the nasties have entered your system all you can do is try to ease symptoms because the cold will 'have it's bout out' no matter what. You need to be psychic and take the remedy before the cold has taken hold, but you don't know it's taken hold until you feel lousy!
I know that dairy products create extra catarrh. I switched to Soya milk years ago for this reason anyway.
And I make sure I eat lots of Onion, green veg and fresh fruit when a cold starts.
And I know that sniffing Lavender Oli drops or Olbas Oil drops on a tissue constantly helps reduce the inflammation in the sinuses etc and helps you feel less miserable.
I find Vicks First Defence taken asap four times a day for a few days [even after symptoms subside] is really good.
And I know that salt water gargle or cider apple vinegar gargle eases a sore throat and cough.
Root ginger eases all of the above.
And staying in a constant warm temperature and resting and taking lots of fluids is about all you can do.
Feel MUCH Better today.
It's just that catarrh which I am still unappreciating!