The last two posts before this are of pine trees as I was just about to post that right in your own backyard is one of your best folk healing remedies.
Harvest pine needles and soak them in a jar with high proof alcohol, and let it sit for 4 weeks in a cool dark space.
This is ultimate antiviral tincture. It is antibacterial and antimicrobial and anti-inflammatory.
Actually has a maximum payload of vitamin C.
This has been used for respiratory for the longest time now.

Try to keep it to Eastern White pine or Scots pine. Some others can have toxic needles.

The smaller greener cones are also high value.
You would just want to strain out all the needles and other bits of earth stuff.

I would say take about a shot glass every few times a day.

Not my picture.