Complex sentence: Treatment of strychnine poisoning involves oral administration of activated charcoal which adsorbs strychnine within the digestive tract; unabsorbed strychnine was thought to be removed from the stomach by gastric lavage along with with tannic acid or potassium permanganate solutions to oxidize strychnine.
Split into simpler sentences: Treatment of strychnine poisoning involves an oral administration of activated charcoal which adsorbs strychnine within the digestive tract. Unabsorbed strychnine can be removed from the stomach by gastric lavage with tannic acid or potassium permanganate solutions to oxidize strychnine.