The Retrospect of Practical Medicine and Surgery, a medical text published in 1856, recommends charcoal biscuits for gastric problems, saying each biscuit contained ten grains (648 mg) of charcoal.
The Retrospect of Practical Medicine and Surgery, a medical text published in 1856, suggests charcoal biscuits for gastric issues, stating that each biscuit included ten grains (648 mg) of charcoal.