1)1 ounce (28 grams) serving of garlic contains: manganese: 23% of the rda vitamin b6: 17% of the rda vitamin c: 15% of the rda selenium: 6% of the rda fiber: 0.6 gram 2). Garlic is highly nutritious, but has very few calories 3. garlic can combat sickness, including the common cold 4) garlic may improve bone health