Garlic is an herb that is related to onion, leeks and chives.  It is low in calories and has medicinal value.  Garlic produces a chemical called allicin, which seems to work for certain conditions.

This is a root, similar to turmeric.  Ginger contains water, proteins, fats, carbohydrate minerals, iron, iodine.  It contains gingerol, a substance with medicinal properties. 

The onion, known scientifically as Allium cepa, is red, yellow, white skinned bulb. It has intense flavor and has significant health […]

There are many, many varieties of chili peppers, and they often have different names depending on region.  The substances that give chili peppers their intensity is Capsaicin.  They are rich in various vitamins and minerals.

Neem or margosa is a fast-growing tree.  Nearly all parts of the neem tree are useful and plays an important role in diseases prevention.