Ginger, turmeric, lemon, honey. The one I make in big batches every fall and freeze into cubes to grab whenever someone feels something coming on.

Every fall I make a giant batch of these and freeze them into cubes. When anyone in our house feels a tickle in their throat, I pop a cube into hot water with a little extra honey and they sip it like tea. It's not magic, but it might be close.
The three power players: ginger fights inflammation, turmeric pairs with black pepper to boost absorption, and raw manuka honey is antibacterial. The lemon adds vitamin C and makes it taste like something you'd want to drink.
I make these in a big jar in the fridge to take as straight shots, and freeze the rest in silicone cube trays for later. They keep their potency for months.
Wear gloves when handling fresh turmeric, or your hands will be stained bright yellow for two days. Ask me how I know.