What is the lethal dose of donormyl?

Donormyl, which contains the active ingredient doxylamine, is an antihistamine used as a sleep aid. The lethal dose can vary significantly between individuals due to factors like age, weight, and overall health. Generally, doses above 25-50 mg may cause severe side effects, and doses exceeding 500 mg can be potentially lethal. However, it's crucial to consult a medical professional or toxicologist for precise information and guidance regarding any substance.