What can you take when you feel a cold coming on?...to stop the progression of whatever you feel is coming

Emergen-C
Echinacea
Zinc
I’m sure there’s more

What works for me is getting to bed early and getting many hours of sleep.

I also find that taking a single antihistamine pill early on, before going to bed, often nips things in the bud, and I don't need to take more pills.

Lemon or lime juice and water …. Squeeze one whole fruit into a glass of water and drink 3 times a day. Also more rest

Lemon juice diluted with warm water and honey

I take theru-flu, cough drops, drink tea and make a hot toddy and try to sweat it out.

Gargle with salt water and drink warm organic honey water

Scientifically, i am afraid, nothing.

I eat a ridiculous amount of bit c and drink emergen-C , I think it’s called.
Also, a small dose of vit. D everyday is helpful to keep it away.

I take a day quill then a night quill and it's gone