Viruddha Ahara as Defined by Charaka.
The food which is wrong in combination, has undergone wrong processing, consumed in incorrect dose, and/or consumed in incorrect time of the day and in wrong season can lead to Viruddha Ahara. Food–food interaction is a serious issue but not much alerted one. Most of these food–food interactions are harmless but it is always better to know about some of them. He clearly says that certain diet and its combinations, which interrupts the metabolism of tissue, which inhibits the process of formation of tissue and which have the opposite property to the tissue are called as Viruddha Anna or incompatible diet.