eating at least 50g of grapes daily stops repeated colds.
Traditional
खट्टे फल · Citrus fruits
One citrus fruit daily through the season — builds resistance against repeated colds.
Traditional
On this page Documented — There are human studies behind this ingredient for this particular complaint. Traditional — Carried by tradition and experience; modern evidence for this particular complaint is limited.
All of this is what others have found — tradition, shared experience and the studies done so far. It is not advice given to any one person. Before changing your diet, and especially if you take any medicine, ask your dietician or doctor.
Naturopathy
Cold friction bath daily builds resistance — start with lukewarm and reduce.
Jala neti twice weekly; sun bath daily.
Foods that help
अंगूर · Grapesखट्टे फल · Citrus fruits
Pick what's in your kitchen and see which remedy fits you best.