Thinai Rice | Foxtail Millet is rich in Protein, Iron, Calcium, and Minerals (Manganese, Magnesium, and Phosphorous). These Foxtail Millet Seeds increase kidney functionality. 2.What is Thinai rice Foxtail or Italian Millet called Thinai in Tamil is one of the forgotten grains that belong to the old Tamil culture. Foxtail millet is grass that grows in a warm climate and is more environmentally friendly as it requires very less water for cultivation in comparison to rice. Thinai Rice | Foxtail Millet used for? Foxtail Millet is rich in Vitamin B12 which is essential for maintaining a healthy heart, smooth functioning of the nervous system, and in general good for skin and hair growth. A diet including Foxtail Millet may improve glycemic control and reduce insulin, cholesterol, and fasting glucose in Type-2 diabetes patients.