Braggs Charcoal Biscuits 150g. Traditionally used to absorb gases in the digestive system, thus relieving the discomfort caused by indigestion, wind & heartburn. Bragg's Medicinal Charcoal Biscuits. An artisan product crafted by hand using 100% natural ingredients, produced to an original recipe dating to 1878 which may be used to support a healthy digestive system. The biscuits may be also eaten as an excellent compliment with cheese & pate's.