Below is a nutritional breakdown of the key ingredients in our organic Matcha green tea.
One serving of Matcha green tea (1gr - 1/2tsp) yields approximately the following nutrients naturally:

Nutrients
Energy 3.24 Calories 
Polyphenols 100mg
Protein 306mg 
Lipids 50mg
Carbohydrates 385 mg
Tea Caffeine 25 mg
Dietary Fiber 385 mg 
Theophylline 0.42 mg
ORAC Units 1384 
Total Amino Acids 272 mg

Vitamins & Minerals
Vitamin A Carotene 595 mg 
Calcium 4.2 mg
Vitamin A Retinol Equiv. 99.17 mg
Magnesium 2.3 mg
Vitamin B1 .06 mg 
Potassium 27 mg
Vitamin B2 .0135 mg
Phosphorus 3.5 mg
Vitamin B6 .009 mg 
Iron .17 mg
Vitamin C .6 mg
Sodium .06 mg
Vitamin E .281 mg
Zinc .063 mg
Vitamin K 29 mcg
Copper .006 mg