I have coped with the sickness simply by drinking green tea, which I found to help with help. Matcha tea in particular seems to help.
Another common treatment for the cold is olive leaf extract, which is also vegan. I simply mix olive leaf extract with warm water and drink it.
As far as throat lozenges go, I have discovered that some Codral variants are vegan. It is thankfully fully labelled on Codral's website. I have been taking Codral Sore Throat Lozenges Soothing + Menthol Flavour, which is vegan.
The easiest way to see if something is vegan or not is to simply google it.
