The morphine-based soothing syrup that became known as 'baby killer'
This teething tonic perhaps did the job a little too well.
Like parents today, 19th-century parents were desperate to ease their teething infants' aching gums — enter Mrs Winslow's Soothing Syrup.
However, this teething tonic perhaps did the job a little too well, soothing babies right into a drug-induced stupor.
Why, you ask? Because the homely sounding Mrs Winslow managed to pack a whopping 65mg of morphine into every fluid ounce of her 'family-friendly' formula.