Once common in the 1800s and early 1900s, bromide salts were prescribed for headaches and anxiety, even accounting for 8% of psychiatric hospital admissions. After the US Food and Drug Administration phased out bromide products between 1975 and 1989, cases like this became almost extinct. Bromide accumulates in the body over time, triggering neurological, dermatological, and psychiatric symptoms. In this patient, levels reached a staggering 1,700 mg/L—200 times the upper safe limit. Alarmingly, the journal noted that other users asking ChatGPT for a salt substitute received the same recommendation, again with no toxicity warning.
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