In Ayurveda, both vata and kapha dosha cause colds and flu when they are out of balance and immunity is weak. Excess kapha dosha has the qualities of cool, heavy, and moist which causes runny nose, sneezing and a cough with a lot of phlegm. Excess vata dosha has the qualities of dryness, lightness and moving fast which causes coldness with chills and a dry cough.
Stomach acidity is usually noticed when there is excess stomach acid, and it flows upward from the stomach into the throat. The stomach acid irritates the lining of the throat and causes a burning sensation and sour taste. According to Ayurveda, when this condition occurs it is known as Amlapitta or sour pitta.
The Ayurvedic text lists four types of fats with medicinal healing qualities. They are ghritam (ghee), oil (sesame), vasa (muscle), and majja (marrow). Each one has its own unique properties, however ghritam has several special qualities that are unmatched. Ghritam will maintain its own healing qualities even when combined with herbs with different qualities.
Arishtams and Asavams are medicinal herbs processed by fermentation. The process of making an Arishtam or Asavam is lengthy and begins by boiling dried herbs in water to extract the medicinal qualities of the herbs. This is called an herbal decoction.