For a go to remedy for general sickness, it’s hard to go wrong with elderberry.

Loaded with antioxidants and immune boosting properties, it has long been used to treat cold and flu symptoms.
https://www.medicinenet.com/can_you_take_elderberry_daily/article.htm
“Black elderberry, genus name Sambucus nigra, is regarded for its therapeutic qualities and has been used in traditional folk medicine for generations. These elderberries have the highest concentrations of antioxidants than any other berry.”

Be proactive and take elderberry even before sickness. You can consume the daily recommended amounts with no side effects.
https://www.webmd.com/diet/elderberry-health-benefits
“The berries and flowers of elderberry are packed with antioxidants and vitamins that may boost your immune system. They could help tame inflammation, lessen stress, and help protect your heart, too.”
Elderberry suckers for children and cough drops work well for comfort and curbing throat symptoms.
In our home we put together an elderberry tea blend to boost and avoid sickness. Experiment with other anti-inflammatory ingredients such as turmeric and ginger.

The smell and taste of elderberry is unpleasant to some. With other additives such as honey or lemon, you can create a blend that tastes better and is even more benificial.

Experiment. Enjoy. Find out if elderberry works for you and share your results!