For Digestion related concerns including Indigestion/ IBS/Ulcerative Colitis etc.
According to Ayurveda, Agni [the metabolic fire] is the source of awareness, nutrition, and intelligence. It drives all type of transformation, digests thoughts and emotions and coordinates countless physiological processes including the digestion, absorption, and assimilation of foods, sensations and experiences into energy.
Ultimately, agni is the gatekeeper of good health. Balanced agni throughout the system prevents the undue accumulation of vata, pitta, kapha and ama (toxins). In the event that any of these substances do start to accumulate, a robust and healthy digestive fire will keep them in the digestive tract where they can be easily eliminated and this will prevent them from invading any tissues.