A person with mushroom poisoning, who accidentally ate a fly agaric. Was brought into the inpatient department. Beside gastric lavage, activated charcoal. enteral administration of salt-based laxatives, and detoxification infusions the patient was prescribed atropine sulfate injections, which significantly reduced the signs of poisoning Specify the type of interaction between muscarine (fly agaric alkaloid) and atropine sulfate: