(ammonia), a clear, colorless volatile liquid with a pungent characteristic odor - 10% solution of ammonia in water. It easily penetrates into tissues, exerting an exciting effect on the central nervous system (breathing quickens, blood pressure rises). In high concentrations, it can cause respiratory arrest. It is used to remove the patient from a fainting state, for which a small piece of fleece moistened with ammonia is carefully brought to the nasal openings. Inhaling it, acting on the receptors of the upper respiratory tract (end of the trigeminal nerve), has an exciting effect on the respiratory center (stimulates breathing). Apply inside (2-3 drops) to half a glass of water for acute alcohol poisoning. The solution also has an antimicrobial effect and cleanses the skin well.