In late-19th-century New Zealand, as in Britain, it was a common practice for mothers to quieten their infants with syrups that contained opium. Despite the reassuring tone of this advertisement from Thames in 1884, some doctors did become concerned at the possible effects of the opium on young children.
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National Library of New Zealand, Papers Past
Reference: Thames Advertiser, 13 February 1884, p. 3
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