You can keep so many natural medicines at home but one which I would advise everyone to have at home [especially in the winter] is:

Esberitox which is Echinacea combined with two homeopathic compounds [Thuja and Baptisia]

The website says: Esberitox® is a combination of two types of Echinacea plus two immune-enhancing herbs, Baptisia and Thuja

It is extremely effective [proven!] for viral [and other infections] You can follow the instructions on the box or ask a doctor familiar with this plant remedy.

Portulaca: so much written about this already

Look it up in my WordPress.

You may order:

https://www.betterlife.com/product/esberitox-chewable/natures-way/63779

https://il.iherb.com/pr/nature-s-way-esberitox-supercharged-echinacea-200-chewable-tablets/2180