Horseradish (Armoracia rusticana)
Horseradish which we all know from Pesach, has clear antibiotic properties.
Especially for bad healing, pussy [infected] wounds applying the tincture[called in Latin Armoracia rusticana] can bring rapid relief and healing.
In bad healing wounds never forget also to take zinc as a supplement.
It is good to eat often some horseradish which one can buy the whole year round in health food shops[look for a product with minimal additives]
It may help prevent colds and respiratory problems.